Question
Find the zeros of the quadratic polynomial x2−8x+12.
Answer: Option A
:
A
To find the zeroes, equate the polynomial to zero and then factorise.
∴x2−8x+12=0
⇒x2−6x−2x+12=0
⇒x(x−6)−2(x−6)=0
⇒(x−6)(x−2)=0
⇒x−6=0orx−2=0⇒x=6;2
2and6are the zeros of the quadraticpolynomial.
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:
A
To find the zeroes, equate the polynomial to zero and then factorise.
∴x2−8x+12=0
⇒x2−6x−2x+12=0
⇒x(x−6)−2(x−6)=0
⇒(x−6)(x−2)=0
⇒x−6=0orx−2=0⇒x=6;2
2and6are the zeros of the quadraticpolynomial.
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