Question

Find value of f(x) = 2x² +7x + 3 at x = -3 .​

Answer 1

Step-by-step explanation:

$f(x) = 2x ^{2} + 7x + 3 \\ f( - 3) = 2( - 3 ^{2} ) + 7 \times - 3 + 3 \\ = 2 \times 9 + ( - 21) + 3 \\ = 18 - 21 + 3 \\ = 0$

Answer 2

Answer:

f(x) = 2x² + 7x + 3

f(-3) = 2 × (-3)² + 7 × (-3) + 3

= 2 × 9 -21 + 3

= 18 -21 + 3

= 21-21

= 0