Question

Add one set of parentheses to the expression 2x² + 4 - 5 so that the value of the expression is 75 when x = 6

Answer 1

answer is +4...

Explanation:

when x=6, the expression becomes

2(6)^2+ 4-5

2(36)+(-1)

72-1=71

therefore 71+4 gives 75