(-2 sqrt(-49)) = -2*9i = -18i
(-3 + sqrt(-4) = -3*2i = -6i
-18i * -6i = 108i^2 - -108
In standard form, = -1.08 * 10^2
Simplify the following:
-2 sqrt(-49) (sqrt(-4)-3)
sqrt(-49) = sqrt(-1) sqrt(49) = i sqrt(49):
-2i sqrt(49) (sqrt(-4)-3)
sqrt(49) = sqrt(7^2) = 7:
-2 i×7 (sqrt(-4)-3)
sqrt(-4) = sqrt(-1) sqrt(4) = i sqrt(4):
-2 i×7 (i sqrt(4)-3)
sqrt(4) = sqrt(2^2) = 2:
-2 i×7 (i×2-3)
-2×7 = -14:
-14 i (i×2-3)
i (2 i-3) = -2-3 i:
-14-(3 i)-2
Factor -1 from -(3 i)-2:
-14-(2+3 i)
-14 (-1) = 14:
Answer: | 14 (2+3i)=28 + 42i
