Question

evaluate the polynomial for x=-7. 2x^2-3x+9

Answer 1

Just plug in -7 as x!

Answer 2

So you have to calculate: 2*(-7)²-3*-7+9. What have you got?

Answer 3

i got -110

Answer 4

I got 128

Answer 5

just done by head dont trust me

Answer 6

2*(-7)²=2*49=98
-3*-7=21
So 98+21+9=128

Answer 7

\[2(-7)^2-3(-7)+9=2(49)+21+9=98+21+9=128\]

Answer 8

thank you!

Answer 9

Always remember WHATEVER squared is always positive

Answer 10

also - · - = +

Answer 11

yw