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Popular >

simplify (2+i)(3-i)

Solution

simplify

(2 + i) (3 - i)

Solution

7 + i

Solution steps

(2 + i) (3 - i)

Apply complex arithmetic rule:

(a + bi) (c + d i) = (a c - b d) + (a d + b c) i

= (2 \cdot 3 - 1 \cdot (- 1)) + (2 (- 1) + 1 \cdot 3) i

Simplify

(2 \cdot 3 - 1 \cdot (- 1)) + (2 (- 1) + 1 \cdot 3) i : 7 + i

= 7 + i

Popular Examples

(x+2)(x+5)=(x+2)(x+5)

(x + 2) (x + 5) = (x + 2) (x + 5)

55.4*1000-x(423+273)=0

55.4 \cdot 1000 - x (423 + 273) = 0

- 8 - 2 b + b < - 5

simplify (x^2-y^2)-[(x+y)(x-y)]+3x^2 simplify

(x^{2} - y^{2}) - [(x + y) (x - y)] + 3 x^{2}

2 x - 1 < 5

Frequently Asked Questions (FAQ)

What is (2+i)(3-i) ?
The solution to (2+i)(3-i) is 7+i