Add.
-$6 x^{4}-9 x^{2}$
$\underline{7 x^{4}-9 x^{2}}$
A) $13 x^{8}-18 x^{4}$
B) $13 x^{4}-18 x^{2}$
C) $-5 x^{6}$
D) $-5 x^{12}$

Name: Add. -$6 x^{4}-9 x^{2}$ $\underline{7 x^{4}-9 x^{2}}$ A) $13 x^{8}-18 x^{4}$ B) $13 x^{4}-18 x^{2}$ C) $-5 x^{6}$ D) $-5 x^{12}$
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Question

Quizplus · Accepted Answer

When adding polynomials, you combine like terms. Here, $6x^4 + 7x^4 = 13x^4$ and $-9x^2 - 9x^2 = -18x^2$, resulting in $13x^4 - 18x^2$.

Add - 6x4−9x26 x^{4}-9 x^{2}6x4−9x2 7x4−9x2‾\underline{7 x^{4}-9 x^{2}}7x4−9x2​ A) 13x8−18x413 x^{8}-18 x^{4}13x8−18x4

Add
- $6 x^{4}-9 x^{2}$ $\underline{7 x^{4}-9 x^{2}}$ A) $13 x^{8}-18 x^{4}$