13.Using ( + )( + ) =
2 + ( + ) + find the following:
(i) 502 x 501
Answers
Answered by
6
Answer:
251502
Step-by-step explanation:
(500+1)×(500+2)
{using (x+a)(x+b)=x^2+(a+b)x +ab}
=500^2+ (1+2)500 +1×2
=250000+1500+2
=251502
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manik404:
14.Find the cube root of 17576 through estimation.
pls
Given number is 17576.
1) Split the number from right into the group of three digit numbers. We have 2 parts 17 and 576.
2)the unit digit of 576 is 6. Hence the unit digit of required cube root is 6.
3) Now, We have to estimate the cube root of 17.
It lies between 8 and 27 i.e cube of 2 and 3. (2^3 = 8 and 3^3 = 27)
Take the units digit of the smallest number i.e 2.
So, The cube root of 17576 is 26.
1) Split the number from right into the group of three digit numbers. We have 2 parts 17 and 576.
2)the unit digit of 576 is 6. Hence the unit digit of required cube root is 6.
3) Now, We have to estimate the cube root of 17.
It lies between 8 and 27 i.e cube of 2 and 3. (2^3 = 8 and 3^3 = 27)
Take the units digit of the smallest number i.e 2.
So, The cube root of 17576 is 26.
OR
17576
203<17576<303
Unit digit of 17576 is 6
unit digit will be 6
17576=26
203<17576<303
Unit digit of 17576 is 6
unit digit will be 6
17576=26
HOPE THIS WILL HELP YOU
thk like ur answer and
Answered by
0
Answer:
5602
Step-by-step explanation:
(500+2)(500+1)
(x+a)(x+b)=x²+(a+b)x+ab
500²+(2+1)500+2×1
250000+1500+2
251502
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