What is expand 144(2a+b-c)^2-9 ?

The solution to expand 144(2a+b-c)^2-9 is 576ab-576ac+576a^2+144b^2-288bc+144c^2-9

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expand 144(2a+b-c)^2-9

expand

144 (2 a + b - c)^{2} - 9

576 ab - 576 a c + 576 a^{2} + 144 b^{2} - 288 b c + 144 c^{2} - 9

Solution steps

144 (2 a + b - c)^{2} - 9

(2 a + b - c)^{2} = 4 ab - 4 a c + 4 a^{2} + b^{2} - 2 b c + c^{2}

= 144 (4 a^{2} + 4 ab - 4 a c + b^{2} + c^{2} - 2 b c) - 9

Expand

144 (4 ab - 4 a c + 4 a^{2} + b^{2} - 2 b c + c^{2}) : 576 ab - 576 a c + 576 a^{2} + 144 b^{2} - 288 b c + 144 c^{2}

= 576 ab - 576 a c + 576 a^{2} + 144 b^{2} - 288 b c + 144 c^{2} - 9

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l im x \Rightarrow 2 (x^{2} + 2 x - 7)

(e - 6)^{2}

(3 x y^{2} + 2 y cos (x)) d y

L {(t + 3)^{2}} (s + 1)

What is expand 144(2a+b-c)^2-9 ?
The solution to expand 144(2a+b-c)^2-9 is 576ab-576ac+576a^2+144b^2-288bc+144c^2-9