Question

find the value if x= -2​

Answer 1

$7 {( - 2)}^{4} + 3 {( - 2)}^{2} - 4$

$7(16) + 3(4) - 4$

$112 + 12 - 4$

$124 - 4$

$= 120$

Answer 2

Answer:

$7({ - 2}^{4}) + 3( { - 2}^{2}) - 4$

7(16)+3(4)-4

112+12-4

=120