Solve te equation x*2=25, if x*y=2(x-1)(y-1)+1 and m=3.
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x*y= 2(x-1)(y-1)+1
To solve x*2 we will...
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neela | Student
The given composition is x*y= 2(x-1)(y-1)+1 and m =3..
To solve x*2 =25.
Under the composition , the LHS x*2 = 2 (x-1)(2-1)+1 = 2(x-1)+1 = 2x-2+1 = RHS=25
2x-1 = 25.
x=(25+1)/2 =13
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giorgiana1976 | Student
We'll substitute y by 2, in the expression of the composition law given:
x*2 = 2(x-1)(2-1)+1
WE'll open the brackets and we'll get:
2(2x-x-2+1)+1 = 25
2(x-1) = 25
2x - 2 = 25
We'll add 2 both sides:
2x = 25+2
2x = 27
We'll divide by 2 both sides:
x = 27/2
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