Question

show that 5 is a zero of the polynomial 2x³ - 7x² - 16x

Answer 1

Hey♥️

p(x)= 2x³- 7x² -16x

p(5)= 2(5)³ -7 (5)² - 16(5)

= 2(125) -7 (25) - 80

= 250 - 175 -80

= 75- 80

= -5

Since the answer is not equal to 0,

we can say that 5 is not a zero of the polynomial 2x³- 7x² -16x.