What is (7sqrt(-9))(-sqrt(-80)) ?

The solution to (7sqrt(-9))(-sqrt(-80)) is 84sqrt(5)

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simplify (7sqrt(-9))(-sqrt(-80))

simplify

(7 - 9) (- - 80)

845

Decimal Notation

187.82971 \dots

Solution steps

(7 - 9) (- - 80)

Apply rule:

a (- b) = - ab

(7 - 9) (- - 80) = - 7 - 9 - 80

= - 7 - 9 - 80

- 80 = 4 - 5

= - 7 - 9 \cdot 4 - 5

Multiply the numbers:

- 7 \cdot 4 = - 28

= - 28 - 9 - 5

- 9 = 3 i

= - 28 \cdot 3 i - 5

- 5 = 5 i

= - 28 \cdot 3 i 5 i

Multiply the numbers:

- 28 \cdot 3 = - 84

= - 84 i 5 i

Apply exponent rule:

aa = a^{2}

ii = i^{2}

= - 84 i^{2} 5

= - 845 i^{2}

Apply imaginary number rule:

i^{2} = - 1

= - 845 (- 1)

Multiply the numbers:

84 (- 1) = - 84

= - (- 84) 5

Remove parentheses:

- (- 84) 5 = 845

= 845

\frac{sin ( θ )}{csc ( θ )} + \frac{cos ( θ )}{sec ( θ )}

20 x^{5} + 18 x^{4}

30 \div \frac{3}{5}

\frac{7 !}{4 ! \cdot 3 !}

(3)^{2} + (2)^{2}

What is (7sqrt(-9))(-sqrt(-80)) ?
The solution to (7sqrt(-9))(-sqrt(-80)) is 84sqrt(5)