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Solve the equation by using the Square Root Property.
x^2 = 21  4x
 9 months ago
 9 months ago
Solve the equation by using the Square Root Property. x^2 = 21  4x
 9 months ago
 9 months ago

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hartnnBest ResponseYou've already chosen the best response.2
do you know how to complete the square ?
 9 months ago

hartnnBest ResponseYou've already chosen the best response.2
x^2+4x = 21 here, the coefficient of 'x' is 4 so, divide it by 2, and take its square, what u get ?
 9 months ago

jazzyfa30Best ResponseYou've already chosen the best response.1
4/2=2 square root is 1.4
 9 months ago

hartnnBest ResponseYou've already chosen the best response.2
we need to SQUARE the result so, 2^2 = 4 now, we add this on both sides., x^2+4x+4 = 21+4 = 25 got this ?? notice something about left side ?
 9 months ago

hartnnBest ResponseYou've already chosen the best response.2
yes, i added the result (here, we got 4) to both sides now notice that left side is a perfect square! isn't it ?
 9 months ago

hartnnBest ResponseYou've already chosen the best response.2
x^2+4x+4 is square of what ?
 9 months ago

hartnnBest ResponseYou've already chosen the best response.2
4 is the square of 2 x^2+4x+4 will be square of \(\large (x+2) \\ (x+2)^2 =x^2+4x+4\) so we have \((x+2)^2=25\) take square root of both sides , what u get ?
 9 months ago

hartnnBest ResponseYou've already chosen the best response.2
yes.. just put +/ in front of 5 x+2=5 or x+2=5
 9 months ago

hartnnBest ResponseYou've already chosen the best response.2
can you solve those 2 easy equations ? x+2= 5....x =.. ? x+2=5, ....x=....?
 9 months ago

jazzyfa30Best ResponseYou've already chosen the best response.1
hi what happenedy u not on ur regulrs account
 9 months ago

jazzyfa30Best ResponseYou've already chosen the best response.1
Solve the equation by factoring: x2 = 18  3x
 9 months ago

GoldPhenoixBest ResponseYou've already chosen the best response.0
Does x2 = x^2 And does the = sign suppose to be a + sign?
 9 months ago

jazzyfa30Best ResponseYou've already chosen the best response.1
sorry im still waking up x^2=183x
 9 months ago

GoldPhenoixBest ResponseYou've already chosen the best response.0
I don't think you can factor that.
 9 months ago

jazzyfa30Best ResponseYou've already chosen the best response.1
sorry @hartnn i fell asleep i was up all night literally i didnt geta ounce of sleep until after w finished the problem we just finished
 9 months ago

hartnnBest ResponseYou've already chosen the best response.2
\(x^2+3x18=0\) can you tell me 2 numbers with sum = 3 and product = 18 ?
 9 months ago

hartnnBest ResponseYou've already chosen the best response.2
get some rest then! you can continue in the morning ? yes! 6 and 3 are correct :)
 9 months ago

jazzyfa30Best ResponseYou've already chosen the best response.1
it is morning hear its 8:30 am
 9 months ago

hartnnBest ResponseYou've already chosen the best response.2
so, split up, 3x = 6x3x \(x^2+6x3x18=0\) factor out x from 1st 2 terms and 3 from last 2.....can you ?
 9 months ago

hartnnBest ResponseYou've already chosen the best response.2
there's no  *minus* sign \((x+6)(x3)=0\) is correct final answer! good :)
 9 months ago

jazzyfa30Best ResponseYou've already chosen the best response.1
oh yeah im sorry yall
 9 months ago

hartnnBest ResponseYou've already chosen the best response.2
and since you need to solve find x from x+6=0 and x3=0
 9 months ago

jazzyfa30Best ResponseYou've already chosen the best response.1
thank you 5 more and im going to sleep
 9 months ago

hartnnBest ResponseYou've already chosen the best response.2
ok! how about asking new question in new post? :)
 9 months ago
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