What is the value of the product (3 – 2i)(3 + 2i)?
5
9 + 4i
9 – 4i
13

(3 - 2i)(3+2i) = (3 * 3) + (-2i * 2i) = 9 + -4i^2

i^2 = -1 so we have

9 +-4(-1)
= 9 + 4
= 13

is my work correct here?

Kylie explained that (-4x+9)^2 will result in a difference of squares because (-4x+9)^2 (-4x+9)^2 =(-4x)^2+(9)^2=16x^2+81

Lee has $1.75 in dimes and nickels. the number of nickels is 11 more than the number of dimes. how many of each coin does he have?

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