Question

verify that 1,2 are the zeroes of the quadratic polynomial x square +x-2also verifu the relationship between the zeroes and the coefficient​

Answer 1

Answer:

$let, f(x) = 2x³ + x² - 5x + 21st to verify: are zeroes of f(x)put f(x) = = = = = 0Put x = 1f(x) = 2(1)³ + (1)² - 5(1) + 2 = 2 + 1 - 5 + 2 = 0put x = -2f(x) = 2(-2)³ + (-2)² - 5(-2) + 2 = 2 × (-8) + 4 + 10 + 2 = -16 +16 = 0Therefore, are zeroes of given cubic polynomial.Comparing given cubic equation with standard equation ax³ + bx² + cx + dwe get a = 2 , b = 1 , c = -5 & d = 2Also take, Now we verify the relation betwee$

Step-by-step explanation: