Question

(x+4) raise to the power 3?

Answer 1

x^2+2*x*4+4^2(identity used-a sq+2*a*b+b^2)
x^2+8x+16
x^2+(4+4)x+16
x^2+4x+4x+16
x(x+4)+4(x+4)
(x+4)(x+4)
x+4=0
x=-4
x+4=0
x=-4
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