What is the standard form of $y = (x + 7) (x + 3) (x + 1)$ $y=(x + 7)(x + 3) (x + 1)$ ?

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What is the standard form of $y = (x + 7) (x + 3) (x + 1)$ $y=(x + 7)(x + 3) (x + 1)$ ?

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Answer 1 · 2015-12-14T05:42:35

$y = x^{3} + 11 x^{2} + 31 x + 21$ $y= x^3 +11x^2 +31x+21$

Explanation:

Expand or multiply the function and combine like terms

Given $y = (x + 7) (x + 3) (x + 1)$ $y= (x+7)(x+3)(x+1)$

$\Rightarrow y = (x^{2} + 3 x + 7 x + 21) (x + 1)$ $=>y= (x^2 + 3x+7x+21)(x+1)$

$\Rightarrow y = (x^{2} + 10 x + 21) (x + 1)$ $=>y= (x^2 + 10x+21)(x+1)$

$\Rightarrow y = (x^{3} + x^{2} + 10 x^{2} + 10 x + 21 x + 21)$ $=>y= (x^3 +x^2+10x^2+10x+21x+21)$

$\Rightarrow y = x^{3} + 11 x^{2} + 31 x + 21$ $=>y= x^3 +11x^2 +31x+21$

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What is the standard form of $y = (x + 7) (x + 3) (x + 1)$ $y=(x + 7)(x + 3) (x + 1)$ ?

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Explanation:

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What is the standard form of y=(x + 7)(x + 3) (x + 1)y=(x+7)(x+3)(x+1)y=(x + 7)(x + 3) (x + 1)?

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Explanation:

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What is the standard form of $y = (x + 7) (x + 3) (x + 1)$ $y=(x + 7)(x + 3) (x + 1)$ ?