Math, asked by shanummishra13, 1 year ago

4m^- 8m = 21 can you give this answer by the abvove method

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Answers

Answered by jeevi73gaddam
3
hope this helps you
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shanummishra13: yehh thanks
Answered by Deepsbhargav
1
hey friend!!!!

=> 4m²-8m=21

=> 4m²-8m-21= 0

in this equation {a=4, b=-8, c=-21}

Now

m = { -b ± root(b²-4×a×c) }/2×a

m = 8±root(64+16×4×4)/8

m = 8±root(64 + 336)/8

m = 8±20/8

Now

m = 8+20/8. = 3.5 ___ans

or

m = 8-20/8 = -1.5____ans

hope it will help you..
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