Answer:
It says that angle ABD all together equal 116 degrees so the angle CBD equals 48 degrees so to find out what x is just subtract angles ABD and CBD which is
116-48 = 68
C. 68
if you insert x and y values in equation you can find the exact equation
4x^{3} + 6x^{2} -10x -15
Step-by-step explanation:
(2x+3)(2x^{2} -5)
2x × 2x^{2} + 2x× (-5) + 3× 2x^{2} + 3 ×(-5)
=4x^{3} -10x + 6x^{2} -15
= 4x^{3} + 6x^{2} -10x -15
