Question

Find the value of the polymial 7x⁴ + 3x² - 4 when x = -2

Answer 1

$7 {x}^{4} + 3 {x}^{2} - 4$

$x = - 2$

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

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

$7 \times 16 + 3 \times 4 - 4$

$112 + 12 - 4$

$124 - 4$

[tex]120

120 is the answer for your question dear