7. Find a quadratic polynomial, the sum and product of whose zeroes are – 10 and 25 respectively. Hence find the zeroes.
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quadratic equation- x^2- (sum)x+ product
=x^2-(-10) x+25
=x^2+10x+25
Zeroes of this polynomial-
x^2+10x+25
=x^2+5x+5x+25
=x (x+5)+5 (x+5)
=(x+5)(x+5)
Hence,
1st zero-- x+5=0
x=-5
2nd zero-- x+5=0
x=-5
⊙____⊙ Hope This Helps:D
=x^2-(-10) x+25
=x^2+10x+25
Zeroes of this polynomial-
x^2+10x+25
=x^2+5x+5x+25
=x (x+5)+5 (x+5)
=(x+5)(x+5)
Hence,
1st zero-- x+5=0
x=-5
2nd zero-- x+5=0
x=-5
⊙____⊙ Hope This Helps:D
dhadshini:
thank you can I ask u one more question
yes sure
3. The decimal expansion of 51 23 52 will terminate after how many decimal places?
10 decimal places
thankyou
if you can help me in this worksheet help me
just 9 question
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