Evaluate
28+4y-7y^{2}
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28+4y-7y^{2}
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y^{2}-2\left(4y^{2}+6y-18-4\left(2y-1\right)\right)
Use the distributive property to multiply 6 by y-3.
y^{2}-2\left(4y^{2}+6y-18-8y+4\right)
Use the distributive property to multiply -4 by 2y-1.
y^{2}-2\left(4y^{2}-2y-18+4\right)
Combine 6y and -8y to get -2y.
y^{2}-2\left(4y^{2}-2y-14\right)
Add -18 and 4 to get -14.
y^{2}-8y^{2}+4y+28
Use the distributive property to multiply -2 by 4y^{2}-2y-14.
-7y^{2}+4y+28
Combine y^{2} and -8y^{2} to get -7y^{2}.
y^{2}-2\left(4y^{2}+6y-18-4\left(2y-1\right)\right)
Use the distributive property to multiply 6 by y-3.
y^{2}-2\left(4y^{2}+6y-18-8y+4\right)
Use the distributive property to multiply -4 by 2y-1.
y^{2}-2\left(4y^{2}-2y-18+4\right)
Combine 6y and -8y to get -2y.
y^{2}-2\left(4y^{2}-2y-14\right)
Add -18 and 4 to get -14.
y^{2}-8y^{2}+4y+28
Use the distributive property to multiply -2 by 4y^{2}-2y-14.
-7y^{2}+4y+28
Combine y^{2} and -8y^{2} to get -7y^{2}.
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Limits
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