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3 years ago

Simplify -20b^8 + 2b^8

Mathematics

2 answers:

masya89 [10]3 years ago

7 0

Answer:

Step-by-step explanation:

sergij07 [2.7K]3 years ago

5 0

Answer:

-18b^8.

Step-by-step explanation:

To simplify an expression, we combine the elements that are similar (look the same).

So, it we have -20b^8 + 2b^8, we see that there are 2 terms with b^8. We need to simplify them.

So, we have -20b^8 + 2b^8, that addition leaves -18b^8.

-18b^8 cannot be simplified more.

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Step-by-step explanation:

if you want the answer to the actual thing then here:

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Liono4ka [1.6K]

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Step-by-step explanation:

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3 years ago

One number is 2 more than 3 times another. Their sum is 22. Find the numbers.

ivolga24 [154]

Make a system of equations.

$\sf~x=3y+2$
$\sf~x+y=22$

Re-arrange the 2nd equation:

$\sf~x+y=22$

Subtract y to both sides:

$\sf~x=-y+22$

Plug in -y + 22 for 'x' in the first equation.

$\sf~x=3y+2$

$\sf~-y+22=3y+2$

Subtract 3y to both sides:

$\sf~-4y+22=2$

Subtract 22 to both sides:

$\sf~-4y=-20$

Divide -4 to both sides:

$\sf~y=\boxed{\sf5}$

Plug this into any of the two equations to find 'x':

$\sf~x+y=22$

$\sf~x+5=22$

Subtract 5 to both sides:

$\sf~x=\boxed{\sf17}$

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VARVARA [1.3K]

Area =l×w
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4 years ago

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