1. x(2x^2-x+4)
2.-3(y-1)(y+2)
3.-(11w^2+18w-1)
The answer is C. Hope this helps
Answer:
a^2 + b^2
Step-by-step explanation:
The product of a complex number and its complex
conjugate is
a real number.
(a+bi)(a - bi)
Recall the formula for the product of a binomial and its conjugate:
(a + b)(a - b) = a^2 - B^2
Then:
The product of a complex number and its complex
conjugate is
a real number.
(a+bi)(a - bi) = a^2 - (bi)^2 = a^2 - b^2(-1) = a^2 + b^2