Simplify the expression
(5x^4-3x^3+6x) - (3x^3+11x^2-8x)
5x^4-3x^3+6x-3x^3+11x^2-8x
5x^4-6x^3-11x^2+14x

is this correct?

1. what is the measure of ∠abc? what is the measure of ∠abd?

Which composition of similarity transformations maps polygon abcd to polygon a'b'c'd'? a dilation with a scale factor less than 1 and then a reflection a dilation with a scale factor less than 1 and then a translation a dilation with a scale factor greater than 1 and then a reflection a dilation with a scale factor greater than 1 and then a translation

Find the multiplicative inverse of 8-12i