Form a quadratic polynomial whose zeroes are -2,7
diviii:
x^2 +2x+7
Answers
Answered by
2
Hio...
If -2 is a zero then (x+2) will be a factor.
Similarly (x-7) will also be a factor
So now if we multiply these two factors then we will get the quadratic polynomial.
(x+2)(x-7)
= x(x-7) + 2(x-7)
= x²-7x+2x-14
= x²-5x-14
↑This is the required polynomial.
Hope it is clear enough to understand and helpful.. ^_^
#BeCurious
If -2 is a zero then (x+2) will be a factor.
Similarly (x-7) will also be a factor
So now if we multiply these two factors then we will get the quadratic polynomial.
(x+2)(x-7)
= x(x-7) + 2(x-7)
= x²-7x+2x-14
= x²-5x-14
↑This is the required polynomial.
Hope it is clear enough to understand and helpful.. ^_^
#BeCurious
Answered by
0
If alpha=-2 and beta=7 than,
Alpha + beta = - 5
Alpha ×beta =-14
And equation will be
X^2 - 5x-14
Alpha + beta = - 5
Alpha ×beta =-14
And equation will be
X^2 - 5x-14
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