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3 years ago

Subtract. (7x2 + 6) - (2x - 5)

Mathematics

1 answer:

AnnZ [28]3 years ago

5 0

Answer: -2x+25

Step-by-step explanation:

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How to solve the problem

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NISA [10]

Answer:

2.57 x 10^1

is the scientific notation of 25.7

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It's possible to build a triangle with a side lengths of 5, 5, and 10

yawa3891 [41]

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Find the product. √5(2+√7) A)2√5+√35 B)√45 C)2√5+2√7 D)√10+√35

OverLord2011 [107]

Answer:

$\huge \boxed{2\sqrt{5} +\sqrt{35}}$

Step-by-step explanation:

$\sqrt{5} (2+\sqrt{7} )$

Expand brackets.

$\sqrt{5} (2)+\sqrt{5}(\sqrt{7} )$

$2\sqrt{5} +\sqrt{5} \sqrt{7}$

Apply radical rule : $\sqrt{a} \sqrt{b} =\sqrt{ab}$

$2\sqrt{5} +\sqrt{5 \times 7}$

$2\sqrt{5} +\sqrt{35}$

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