If a and b are the roots of the equation x2 - 8x + 8 = 0, then the value of a2 + b2 is:
If a and b are the roots of the equation x2 - 8x + 8 = 0, then the value of a2 + b2 is:
Answer/Solution
48
Steps/Work
Sol.(b) The sum of roots = a+ b = 8
Product of roots = ab = 8
Now, a2 + b2 = (a + b)2 - 2ab = 64 - 16 = 48
Answer B
Product of roots = ab = 8
Now, a2 + b2 = (a + b)2 - 2ab = 64 - 16 = 48
Answer B