What is (3+i)+(-12-9i) ?

The solution to (3+i)+(-12-9i) is -9-8i

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simplify (3+i)+(-12-9i)

simplify

(3 + i) + (- 12 - 9 i)

- 9 - 8 i

Solution steps

(3 + i) + (- 12 - 9 i)

Group the real part and the imaginary part of the complex number

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

= (3 - 12) + (1 - 9) i

Simplify

(3 - 12) + (1 - 9) i : - 9 - 8 i

= - 9 - 8 i

(2 a - 1) (8 a - 5)

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\frac{x ^{2} - 5 x + 6}{x ^{2} - 2 x}