Question

solve this eqn value
$x = 4 \\ {x}^{3} + 2 {x}^{2} + 9x + 2$
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Answer 1

Answer:

${x}^{3} + 2 {x}^{2} + 9x + 2 = 134$

Step-by-step explanation:

$x = 4 \\ f(x) = {x}^{3} + 2 {x}^{2} + 9x + 2 \\ f(4) = {4}^{3} + 2 \times {4}^{2} + 9 \times4 + 2 \\ \: \: \: \: \: \: \: \: \: = 64 + 32 + 36 + 2 \\ \: \: \: \: \: \: \: \: \: = 134$

Answer 2

$x = 4 \\ f(x) = {x}^{3} + 2 {x}^{2} + 9x + 2 \\ f(4) = {4}^{3} + 2 \times {4}^{2} + 9 \times4 + 2 \\ \: \: \: \: \: \: \: \: \: = 64 + 32 + 36 + 2 \\ \: \: \: \: \: \: \: \: \: = 134$