Question

Find the value of the expression 2x³-5x²+x+7 for x=(-2) *

2 points

(-31)

(-11)

(-12)

(-13)


​

Answer 1

Answer:

• x = -2

$\rarr \bf \: 2 {x}^{3} - 5 {x}^{2} + x + 7 \\ \\ \rarr \sf \: 2 {( - 2)}^{3} - 5 {( - 2)}^{2} + ( - 2) + 7 \\ \\ \rarr \sf \: 2( - 8) - 5(4) - 2 + 7 \\ \\ \rarr \sf \: - 16 - 20 + 5 \\ \\ \rarr \bf \pink{ - 31}$