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3 years ago

Write the expression in factored form. 81m^2-49

Mathematics

1 answer:

ivolga24 [154]3 years ago

5 0

We can use the difference of two squares, which is:

x^2 + y^2 = (x-y)(x+y)

So,

(9m-7)(9m+7)

Hope this helps!

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Step-by-step explanation:

We know that 1/5 galloons of water fills 2/3 of the bin.

So, we can write the following fraction:

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$\frac{\frac{1}{5}\text{ galloons}}{\frac{2}{3}\text{ bin}}=\frac{x\text{ galloons}}{1\text{ bin}}$

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$\frac{1}{2}(2x)=\frac{1}{2}(\frac{3}{5})$

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