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Popular >

simplify (3.9^2-16)/(3.9-4)

Solution

simplify

\frac{3. 9 ^{2} - 16}{3.9 - 4}

Solution

7.9

Solution steps

\frac{3. 9 ^{2} - 16}{3.9 - 4}

Factor

3. 9^{2} - 16 : (3.9 + 4) (3.9 - 4)

= \frac{( 3.9 + 4 ) ( 3.9 - 4 )}{3.9 - 4}

\frac{( 3.9 + 4 ) ( 3.9 - 4 )}{3.9 - 4} = \frac{7.9 ( - 0.1 )}{- 0.1}

= \frac{7.9 ( - 0.1 )}{- 0.1}

Cancel the common factor:

- 0.1

= 7.9

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Frequently Asked Questions (FAQ)

What is (3.9^2-16)/(3.9-4) ?
The solution to (3.9^2-16)/(3.9-4) is 7.9