3 years ago

Simplify 7b-2b+3b+4b

Mathematics

2 answers:

kolezko [41]3 years ago

4 0

It should be just 12b, since they all have the same exponent, they can all be combined.

Schach [20]3 years ago

3 0

The answer is 12b as 7b - 2b equals 5b add 3b add 4b equals 12b as they all have the same denominator I hope that helps you

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Ok done. Thank to me :>

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2 years ago

Question 1 What is the solution of n² - 49 = 0? 0 +7 07 -7 O no solution

Sphinxa [80]

Hey there!

This can be written as $n^{2}-(7)^{2}$

This is in form of $\fbox{a^{2}-b^{2}}$ , it can be expanded as $\fbox{(a-b)(a+b)}$

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So option 7 , -7 are correct.

Hope this is clear :)
Have a good day:)

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