What is the value of x1 if x=7, y=9? x1-=++x – y++ + --x +y--
Answers
Answer:
X1-=++x - y++ + --x +y--
14 is ur ans
Explanation:
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Answer:
In the given fig. (i), the solutions of the equation are (−1,1),(0,0) and (1,−1).
∴ the equation which satisfies these solutions is the correct equation.
Equation x+y=0, satisfies these solutions.
PROOF:-
If we put the value of x=−1 and y=1 in the equation x+y=0
=x+y=−1+1=0
∴L.H.S=R.H.S
if we put the the value of x = 0 and y = 0
=x+y=0+0=0
∴L.H.S=R.H.S
If we put the value of x=1 and y=−1
=x+y=1+(−1)=1–1=0
L.H.S=R.H.S
In the given the solutions of the equation are (−1,3),(0,2) and (2,0).
∴The equation which satisfies these solutions is the correct equation.
Equation (iii) y=−x+2 , satisfies these solutions.
Proof:
If we put the value of x=−1 and y=3 in the equation y=−x+2
y=−x+2
3=−(−1)+2
3=3
∴L.H.S=R.H.S
if we put the the value of x=0 and y=2
y=−x+2
2=−0+2
2=2
∴L.H.S=R.H.S
If we put the value of x=2 and y=0
y=−x+2
0=−2+2
0=0
L.H.S=R.H.S
Explanation:
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