How many zeros does the polynomial (x – 3)2 – 4 can have? Also, find its zeroes.
Answers
Answered by
5
Polynomial is p(x)=x
3
+13x
2
+32x+20
one of the zero is x=−2
One factor of p(x) is (x+2)
⇒ Polynomial becomes p(x)=(x+2)(x
2
+11x+10) factoring the quadratic, by middle term spletting
⇒ p(x)=(x+2)(x
2
+10x+x+10)
=(x+2)[x(x+10)+1(x+10)]
=(x+2)[(x+10)(x+1)]
⇒ Other factor are x+10 and x+1
Zeros are x=−10 and x=−1
⇒ All the zeroes of polynomial p(x) are −1,−2 and −10
Hope it helps you
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Answered by
6
Step-by-step explanation:
Solution:
Given equation is (x – 3)2 – 4
Now, expand this equation.
=> x2 + 9 – 6x – 4
= x2 – 6x + 5
As the equation has a degree of 2, the number of zeroes will be 2.
Now, solve x2 – 6x + 5 = 0 to get the roots.
So, x2 – x – 5x + 5 = 0
=> x(x – 1) -5(x – 1) = 0
=> (x – 1)(x – 5) = 0
x = 1, x = 5
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