Question

x²+10x+21middle Ter split

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Answer 1

Answer:

(x + 3)(x + 7)

Step-by-step explanation:

x² + 10x + 21

x² + 3x + 7x + 21

x(x + 3) + 7(x + 3)

(x + 3)(x + 7)

Answer 2

$\huge \red{ \boxed{ \bf{ \ulcorner{ \mid{ \overline{ \underline{ANSWER}}}}}\mid }}$

$\huge \pink{ \mid{ \overline{ \underline{ \mathbb{GI} \mathit{V}\mathfrak{EN}}}} \mid}$

The solution is

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${x}^{2} + 10x + 21 \\ {x}^{2} + 7x + 3x + 21 \\ x(x + 7) + 3(x + 7) \\ (x + 3)(x + 7) \\ x = \: - 3 \: and \: - 7$

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