Math, asked by bhavita786, 7 months ago

if alpha and beta are the zeros of the polynomial 2x^2-5x+8 find the value of alpha^2 +beta^2​

Answers

Answered by vetri1817
0

Answer:

a2 +b2  =  -7/4  = -1.75

Step-by-step explanation:

2X2 - 5X +8 is the polynomial

a, b are zeros of the polynomial

a+b = - (Co.eff of X)/(co.eff of X2)

ab = Constant term /(co.eff of X2)

a+b = -(-5)/2 =5/2 ,  ab = 8/2 =4

a2+b2 = (a+b)^2 - 2ab

a2+b2 = (5/2)^2 - 2(4)

= (25/4) - 8 = -7/4 = -1.75

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