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erik [133]
3 years ago
10

Simplify the expression. -20a-2b-7 5a-5b3

Mathematics
2 answers:
bogdanovich [222]3 years ago
4 0

Answer:

(-20a+2b-7, 5a+5b^3)

Step-by-step explanation:

Use vector arithmatic to simplify

Nikolay [14]3 years ago
4 0

Answer:

\frac{-4a^3}{b^{10} }

Step-by-step explanation:

Step 1: Write out the expression separately. Like so:

-20 a^{-2} b^{-7}                              5 a^{-5}  b^{3}

Step 2: Since the it's a fraction were dividing. The bases of the exponents are the same, so you can divide the numbers and subtract the exponents.

-20  ÷  5 = -4    

a^{-2}  -  a^{-5} = a^{3}

b^{-7} -  b^{3}    = b^{-10}

Step 3: Notice that there is a negative exponent. To get rid of the negative, you have to make it positive and move it from being the numerator to being the denominator.

b^{-10} →→→ b^{10}

Step 4: Rewrite the expression with the -4, a^{3} , and b^{10}.

\frac{-4a^{3} }{b^{10} }  

hope this helps  :)

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