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Popular >

simplify (9+i)(9-i)

Solution

simplify

(9 + i) (9 - i)

Solution

82

Solution steps

(9 + i) (9 - i)

Apply complex arithmetic rule:

(a + bi) (a - bi) = a^{2} + b^{2}

= 9^{2} + 1^{2}

9^{2} + 1^{2} = 82

= 82

Popular Examples

2^{2x+1}-1>-0.75

2^{2 x + 1} - 1 > - 0.75

4(4x-4)+x+4=-46

4 (4 x - 4) + x + 4 = - 46

x^{2} - 6 x - 135 \geq 0

simplify (-x)^2 simplify

(- x)^{2}

9 x - x^{3} \geq 0

Frequently Asked Questions (FAQ)

What is (9+i)(9-i) ?
The solution to (9+i)(9-i) is 82