What is ((-3.9)^2-16)/((-3.9)+4) ?

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

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

simplify

\frac{( - 3.9 ) ^{2} - 16}{( - 3.9 ) + 4}

- 7.9

Solution steps

\frac{( - 3.9 ) ^{2} - 16}{( - 3.9 ) + 4}

Apply rule:

(- a) = - a

(- 3.9) = - 3.9

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

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

Cancel the common factor:

0.1

= - 7.9

2^{i}

3.19 \cdot 1 0^{5}

\frac{5 ^{- 8}}{5}

(x - 6) (x + 3 + 3)

(a^{2} b - 12) + (- 8 a + 12 + 7 a^{2} b)

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