Question

Answer either one because I don’t kno how to solve them

Answer 1

we have that

y = 3x + 5

and that

z = x² + 2x - 5

we want to know what yz or y·z is equal to

we have what y and z are equal to so we can multiply them together

(3x+5)(x²+2x-5)

first we multiply each value in the second set of parentheses by 3x and then multiply each value in the second set of parentheses by 5 and then combine like terms.

(3x+5)(x²+2x-5)

3x³+6x²-15x + 5x² +10x -25

3x³ + 11x² -5x -25

so your answer should be

D) 3x³+11x²-5x-25