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3 years ago

Brainiest to correct answer 7 (3x - 2)

Mathematics

2 answers:

VashaNatasha [74]3 years ago

7 0

Answer: 21x - 14

Step-by-step-explanation:
7×3x - 7×2
21x - 14

motikmotik3 years ago

6 0

Answer:

21x-14

Step-by-step explanation:

you just need to multiple 7×3 and you'll get 21x-and then you'll multiply 7×2 and then you'll get 21x-14

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3 years ago

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Answer:

Proof provided in the explanation.

Step-by-step explanation:

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I'm going to rewrite that middle term so I can apply Pythagorean Identity, $\sin^2(\theta)=1-\cos^2(\theta)$ :

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