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Problem 138

Add the expressions \(4 a^{2}-3+5 a, 6 a-2 a^{2}+2\), and \(2 a^{2}-3 a+8\)

Expert verified

The sum of the expressions \(4a^2 - 3 + 5a\), \(6a - 2a^2 + 2\), and \(2a^2 - 3a + 8\) is \(4a^2 + 8a + 7\).

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Chapter 8

Add $\left(3 x y^{2}+2 x y+5 x^{2} y\right)+\left(2 x y^{2}-4 x y+2 x^{2} y\right)$

Chapter 8

Multiply \(\quad 3 x^{2}-5 y^{2}-4 x y\) by \(2 x-7 y\)

Chapter 8

Find the value of the polynomial \(3 x^{2} y-2 x y^{2}+5 x y\) when \(x=1\) and \(y=-2\).

Chapter 8

Subtract \(3 x^{4} y^{3}+5 x^{2} y-4 x y+5 x-3\) from the polynomial $5 x^{4} y^{3}-3 x^{2} y+7$

Chapter 8

From the sum of \(6 \mathrm{x}^{2}+4 \mathrm{xy}-8 \mathrm{y}^{2}-11\) and \(3 x^{2}-4 y^{2}+8+5 x y\) subtract \(x y-10-5 x^{2} 7 y^{2}\)

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