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Multiply: (2x^2-4x+5)\ b y\ (x^2+3x-7)...

Multiply: `(2x^2-4x+5)\ b y\ (x^2+3x-7)`

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` 2x^2 – 4x + 5 by x^2 + 3x – 7`
`=(2x^2 – 4x + 5) × (x^2 + 3x – 7)`
`=2x^2 (x^2 + 3x -7) – 4x(x^2 + 3x – 7) + 5(x^2 + 3x -7)`
`=2x^4 + 6x^3 – 14x^2 – 4x^3 – 12x^2 + 28x + 5x^2– 15x - 35`
`=2x^4 + 6x^3 – 4x^3 – 14x^2 – 12x^2 + 5x^2 + 28x + 15x – 35`
`=2x^4 + 2x^3 – 21x^2 + 43x – 35`
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