form quadratic equation whose roots are a + b and a minus b
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Roots of equation =(a+b)(a-b)
Sum of roots = a+b+a-b = 2a
Product of roots = a+b*a-b = a²-b²
Equation = x²- 2ax + a²-b²
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Answer: x^2 -2ax + (a^2 - b^2)
Step-by-step explanation:
Let alpha = a + b and beta = a - b
Then,
p(x) = x^2 - (alpha + beta)x + alpha × beta
= x^2 - (a+b+a-b)x + (a+b)(a-b)
= x^2 - 2ax + (a^2 - b^2)
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