Solve for y
y=-7\left(-7x^{3}-3x^{2}+2x-5\right)^{2}
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y=-7\left(49x^{6}+42x^{5}-19x^{4}+58x^{3}+34x^{2}-20x+25\right)
Square -3x^{2}+2x-5-7x^{3}.
y=-343x^{6}-294x^{5}+133x^{4}-406x^{3}-238x^{2}+140x-175
Use the distributive property to multiply -7 by 49x^{6}+42x^{5}-19x^{4}+58x^{3}+34x^{2}-20x+25.
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