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anonymous
 3 years ago
Solve the equation by using the Square Root Property.
x^2 = 21  4x
anonymous
 3 years ago
Solve the equation by using the Square Root Property. x^2 = 21  4x

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hartnn
 3 years ago
Best ResponseYou've already chosen the best response.2do you know how to complete the square ?

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

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.04/2=2 square root is 1.4

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.2we 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 ?

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

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.2x^2+4x+4 is square of what ?

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.24 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 ?

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.2yes.. just put +/ in front of 5 x+2=5 or x+2=5

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.2can you solve those 2 easy equations ? x+2= 5....x =.. ? x+2=5, ....x=....?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0hi what happenedy u not on ur regulrs account

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Solve the equation by factoring: x2 = 18  3x

GoldPhenoix
 3 years ago
Best ResponseYou've already chosen the best response.0Does x2 = x^2 And does the = sign suppose to be a + sign?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0sorry im still waking up x^2=183x

GoldPhenoix
 3 years ago
Best ResponseYou've already chosen the best response.0I don't think you can factor that.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0sorry @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

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

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

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0it is morning hear its 8:30 am

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

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

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0oh yeah im sorry yall

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.2and since you need to solve find x from x+6=0 and x3=0

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0thank you 5 more and im going to sleep

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.2ok! how about asking new question in new post? :)
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