Pierre correctly simplified an expression. when he substituted x=2 into the simplified expression, the value was 20. which could be pierre’s original expression?

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.

If mary had 320 toy cars and she gave her friend 50 cars and then she gave her brother 72 more cars how much toy cars would mary have left ● explain with proper details