What is (-2i+7)(7+2i) ?

The solution to (-2i+7)(7+2i) is 53

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simplify (-2i+7)(7+2i)

simplify

(- 2 i + 7) (7 + 2 i)

53

Solution steps

(- 2 i + 7) (7 + 2 i)

Rewrite

- 2 i + 7

in standard complex form:

7 - 2 i

= (7 - 2 i) (7 + 2 i)

Apply complex arithmetic rule:

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

= 7^{2} + (- 2)^{2}

7^{2} + (- 2)^{2} = 53

= 53

\frac{7 x}{2 x}

\frac{1}{3 x}

\frac{1}{2} \div 10

lo g_{25} (25)

\frac{3 ^{7} \cdot 3 ^{8}}{3 ^{19}}