What is expand 0.8(-y^2+40y-391)^2 ?

The solution to expand 0.8(-y^2+40y-391)^2 is 0.8y^4-64y^3+1905.6y^2-25024y+122304.8

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expand 0.8(-y^2+40y-391)^2

expand

0.8 (- y^{2} + 40 y - 391)^{2}

0.8 y^{4} - 64 y^{3} + 1905.6 y^{2} - 25024 y + 122304.8

Solution steps

0.8 (- y^{2} + 40 y - 391)^{2}

(- y^{2} + 40 y - 391)^{2} = y^{4} - 80 y^{3} + 2382 y^{2} - 31280 y + 152881

= 0.8 (y^{4} - 80 y^{3} + 2382 y^{2} - 31280 y + 152881)

Distribute parentheses

= 0.8 y^{4} + 0.8 (- 80 y^{3}) + 0.8 \cdot 2382 y^{2} + 0.8 (- 31280 y) + 0.8 \cdot 152881

Apply minus-plus rules

+ (- a) = - a

= 0.8 y^{4} - 80 \cdot 0.8 y^{3} + 2382 \cdot 0.8 y^{2} - 31280 \cdot 0.8 y + 152881 \cdot 0.8

Simplify

0.8 y^{4} - 80 \cdot 0.8 y^{3} + 2382 \cdot 0.8 y^{2} - 31280 \cdot 0.8 y + 152881 \cdot 0.8 : 0.8 y^{4} - 64 y^{3} + 1905.6 y^{2} - 25024 y + 122304.8

= 0.8 y^{4} - 64 y^{3} + 1905.6 y^{2} - 25024 y + 122304.8

, (4 + 11)

(0.25 n^{3} + 4) (1, 5 n^{3} - 3)

\frac{5 x + 4}{( 8 x + 4 ) ( x - 1 )}

\frac{2 ( s ^{2} + s + 10 )}{( s + 2 ) s}

\frac{1}{( z + 2 ) ^{2} ( z - 3 )}

What is expand 0.8(-y^2+40y-391)^2 ?
The solution to expand 0.8(-y^2+40y-391)^2 is 0.8y^4-64y^3+1905.6y^2-25024y+122304.8