Question

i need the answers for the circled questions ASAP
please

Answer 1

Step-by-step explanation:

(15) quadratic polynomial given sum and product if zeros =>

x² - x(sum of zeros) + product of zeros

=> p(x) = x² - x(0) + (- 1 )

=> p(x) = x² - 1

x² - 1 =

=> x = ± 1

=> x = 1 and x = -1

(17) given a = 2 and b = -6

p(x) = x² - x(2 - 6) + (2)(-6)

=> p(x) = x² + 4x - 12

verification

a + b = -b/a

=> -(4)/1 => -4, a + b = 2-6 => -4 √

ab = c/a => -12/1 => -12, ab = 1×-12 => -12 √