Question

if1 and -1 are zeros of polynomial p(x) ax³+x²-2x+b find a and b ​

Answer 1

• x = 1
• ax3 + x2 - 2x + b = 0
• a(1)3 + (1)2 - 2(1) + b=0
• 3a + 2 - 2 + b = 0
• 3a + b = 0
• b = - 3a
• x = - 1
• ax3 + x2 - 2x + b = 0
• a(- 1)3 + (- 1)2 - 2( - 1) + b = 0
• - 3a - 2 + 2 + b = 0
• - 3a + b = 0
• -3a -3a = 0
• -6a =0
• a=0

Answer 2

Answer will be completed