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pottersheepBest ResponseYou've already chosen the best response.2
Rearrange it to become 2x^2+4x  16 = 0 Then plug it into the formula or factor it
 one year ago

pottersheepBest ResponseYou've already chosen the best response.2
You can factor out a 2, see where that gets you..
 one year ago

pottersheepBest ResponseYou've already chosen the best response.2
it becomes 2(x^2 + 2x  8) = 0 when you factor it
 one year ago

pottersheepBest ResponseYou've already chosen the best response.2
Can you factor x^2 + 2x  8 ?
 one year ago

Baldwin777Best ResponseYou've already chosen the best response.1
okay let me try this
 one year ago

Baldwin777Best ResponseYou've already chosen the best response.1
it would be (x+4)(x2) right?
 one year ago

pottersheepBest ResponseYou've already chosen the best response.2
Do you know the formula? The quadratic formula?
 one year ago

Baldwin777Best ResponseYou've already chosen the best response.1
Yes and no, I forgot the steps
 one year ago

pottersheepBest ResponseYou've already chosen the best response.2
Nice you factored it right
 one year ago

Baldwin777Best ResponseYou've already chosen the best response.1
So then I would plug the x+4 and x2 into the equation right,? it would be 2(4)^2+4(2)=16??
 one year ago

pottersheepBest ResponseYou've already chosen the best response.2
So 2(x^2 + 2x  8) = 0 2 (x  2 ) ( x + 4 ) = 0 NOW, you know how anything times zero = 0? You have to make at least one of the brackets = 0 to get zero as an overall answer. So what can we put as x to make the brackets zero? There is x in two places so there are 2 answers
 one year ago

pottersheepBest ResponseYou've already chosen the best response.2
To find the answers, factoring is one way. The formula is another. Yo chose to factor so you dont need to use the formula anymore
 one year ago

pottersheepBest ResponseYou've already chosen the best response.2
You just have to make the brackets = 0, don't put in the two! See we got 2 (x  2 ) ( x + 4 ) = 0 So, one bracket is (x2) . We want to make this = 0 x2 = 0 x = 2 !!! One of the answers.. Next bracket (x+4) Make it equal to zero. x+4 = 0 x= 4 So the answer is x = 4 or x = 2
 one year ago

Baldwin777Best ResponseYou've already chosen the best response.1
oh wow, that was really simple, Now I under stand
 one year ago
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