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x²-2x-8
by middle term splitting,
x²+2x-4x-8
x(x+2)-4(x+2)
(x+2)(x-4)=0
x-2=0
x=2
and,
x+4=0
x=-4
so,zeroes are -2,4
now, verification,
x²-2x-8
where, a=1, b=-2, c=-8
sum of zeroes=-b/a
-2+4=-(-2)/1
2=2
now,
product of zeroes=c/a
-2×4=-8/1
-8=-8
hence, verified.
hope this answer will help you.
by middle term splitting,
x²+2x-4x-8
x(x+2)-4(x+2)
(x+2)(x-4)=0
x-2=0
x=2
and,
x+4=0
x=-4
so,zeroes are -2,4
now, verification,
x²-2x-8
where, a=1, b=-2, c=-8
sum of zeroes=-b/a
-2+4=-(-2)/1
2=2
now,
product of zeroes=c/a
-2×4=-8/1
-8=-8
hence, verified.
hope this answer will help you.
sonybhujelpd6by4:
can I write.. either (x-4)=0. or (x+2)=0
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