Question

Circle the student error in the problem below, and rewrite what the correct step should be

Answer 1

Circle the 1x in the expression g(x) = 2(x^2 +1x +1 ) - 6

Explanation:

given the expression 2(x+1)^2 -6 we have:
2(x+1)^2 -6= 2(x+1)(x+1)-6

= 2(x^2 +x*1 + 1 *x + 1*1) -6

= 2( x^2 + x+x +1) -6

= 2 (x^2 +2x +1) -6

The student wrote 1x instead of 2x on the 3rd line of the image