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2 years ago

Which expression is the factorization of x2 10x 21? (x 3)(x 7) (x 4)(x 6) (x 6)(x 15) (x 7)(x 14)

Mathematics

1 answer:

Leona [35]2 years ago

6 0

$\large\color{pink}{{★ƛƝƧƜЄƦ ↦}}$

$\purple{ \bf{Let's \: solve→}}$

$\sf{↪ {x}^{2} + 10x + 21} \\ \\ \sf{↪by \: splitting \: middle \: term} \\ \\ \sf{↪ {x}^{2} + 7x + 3x + 21} \\ \\ \sf{↪taking \: common} \\ \\ \sf{↪x(x + 7) + 3(x + 7)} \\ \\ \sf{↪(x + 3)(x + 7) \: is \: yr \: answer}$

$\sf{\:мѕнαcкεя\: ♪...}$

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Varvara68 [4.7K]

Here are the answers:

1) C

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2 years ago

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NeX [460]

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Answer:

Step-by-step explanation:

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2 years ago

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igor_vitrenko [27]

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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