Libby P. answered 05/26/20
ACT/SAT, Math, and Science Tutor
Given the expression 48x3+56x2+16x, we can evaluate the polynomial when x=2.
First, we replace each "x" in the equation with 2.
48(2)3+56(2)2+16(2)
Next, we simplify the exponents.
48(8)+56(4)+16(2)
Using PEMDAS, we first must multiply the three pairs of numbers.
384+224+32
Finally, simplify by adding.
640