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\left(-1\right)^{4}x^{4}+2x^{2}
Expand \left(-x\right)^{4}.
1x^{4}+2x^{2}
Calculate -1 to the power of 4 and get 1.
x^{4}+2x^{2}
For any term t, t\times 1=t and 1t=t.
\left(-1\right)^{4}x^{4}+2x^{2}
Expand \left(-x\right)^{4}.
1x^{4}+2x^{2}
Calculate -1 to the power of 4 and get 1.
x^{4}+2x^{2}
For any term t, t\times 1=t and 1t=t.