IF VALUE OF QUADRATIC POLYNOMIAL P(X) IS 0 AND VALUE OF P(-2)=2 VALUE OF P(2) IS
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Since the quadratic polynomial p(x) = 0 at only at -1, p(x) has a double zero at -1. Therefore, p(x) can be taken as a(x+1)^2. Given p(-2) = 2 => a(-2+1)^2 = 2 or a = 2.
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Hola mate
Here is you answer -
Consider the quadratic equation as:
p(x) = x² - bx + c = 0
at x=(-1), p(x) = 0, that is p(-1) = 0
p(-1) = (-1)² - b(-1) + c = 0
1 + b + c = 0 __________(1)
p(-2) = (-2)² - b(-2) + c = 0
4 + 2b + c =0 _________(2)
Now, Solve these 2 equation
from equation (1):
c = -(b +1)
put this "c" in equation (2):
4 + 2b + (-(b +1)) = 0
4 + 2b - b - 1 = 0
4 + b - 1 = 0
b = -3
and c = -(-3 + 1) = -(-2) = 2
So the quadratic equation is:
x² - (-3)x + 2 = 0
x² + 3x + 2 = 0
Hope it helps you!
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