Any body please solve 5 and 7 its argent please
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7. no. answer is 4.5 (in decimal)..
And 5 no. pic is not clear
And 5 no. pic is not clear
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Answered by
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Hi
Here is your answer mate *
5) (198)^2 =(100+98)^2
By using (a+b)^2=a^2 +b^2+2ab
100^2 + 98^2 + 2 × 100 × 98
= 10000 + 9604 + 19600
= 39204
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7) 4 (2x-4) + 5 (2x+3) = 4×20
8x - 16 + 10x + 15 = 80
18x - 1 = 80
18x = 80 + 1
x = 81 / 18
x = 4. 5
------------------------------------------------
Hope it helps U
Any doubts feel free to ask in comments..
Here is your answer mate *
5) (198)^2 =(100+98)^2
By using (a+b)^2=a^2 +b^2+2ab
100^2 + 98^2 + 2 × 100 × 98
= 10000 + 9604 + 19600
= 39204
----------------------------------------------
7) 4 (2x-4) + 5 (2x+3) = 4×20
8x - 16 + 10x + 15 = 80
18x - 1 = 80
18x = 80 + 1
x = 81 / 18
x = 4. 5
------------------------------------------------
Hope it helps U
Any doubts feel free to ask in comments..
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