Answer:
5.5²-2×5.5=19.25
Step-by-step explanation:
USING trial and improvement method put value of x=1 ,2,3,4,5,6
when x=5, the ans is 15
when x=6, the ans is 24
Now put x=5.5
x=5.5,-3.5
x^2-2x=19.25
x^2-2x-19.25=0
x^2-2x-77/4=0
x^2-11x/2+7x/2-77/4=0
x(x-11/2)+7/2(x-11/2)=0
(x+7/2)(x-11/2)=0
hence, x=11/2,-7/2
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Verified answer
Answer:
5.5²-2×5.5=19.25
Step-by-step explanation:
USING trial and improvement method put value of x=1 ,2,3,4,5,6
when x=5, the ans is 15
when x=6, the ans is 24
Now put x=5.5
Answer:
x=5.5,-3.5
Step-by-step explanation:
x^2-2x=19.25
x^2-2x-19.25=0
x^2-2x-77/4=0
x^2-11x/2+7x/2-77/4=0
x(x-11/2)+7/2(x-11/2)=0
(x+7/2)(x-11/2)=0
hence, x=11/2,-7/2