How Do You Factor X(x+7)=4(3+2x) ?
This in algebra I. I can't remember how to factor quadratic equations. There are rules to it, but i cant remember them.
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asked 2 years ago
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X(X+7)=4(3+2X)
or, X^2 + 7X = 12 + 8X [by simplifying it]
or, X^2 -X - 12 = 0
or, X^2 - 4X +3x - 12 = 0 [4 & 3 are factors of 12, & 4-3 is equal to 1]
or, X(X-4) +3(X-4) = 0
or, (X-4) (X+3) = 0
Therefore, the factors are (X-4)(X+3)
or, X^2 + 7X = 12 + 8X [by simplifying it]
or, X^2 -X - 12 = 0
or, X^2 - 4X +3x - 12 = 0 [4 & 3 are factors of 12, & 4-3 is equal to 1]
or, X(X-4) +3(X-4) = 0
or, (X-4) (X+3) = 0
Therefore, the factors are (X-4)(X+3)
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X(x+7)=4(3+2x)
x^2+7x=12+8x
x^2+7x-8x-12=0
x^2+7x-8x-12=0
x^2- x-12 = 0
Then use the quadratic formula to find factors.
x^2+7x=12+8x
x^2+7x-8x-12=0
x^2+7x-8x-12=0
x^2- x-12 = 0
Then use the quadratic formula to find factors.
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