Root2x^2 + 9x
Factorise!!!!
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Correct option is
A
8
Given equation is:
2x+9
+x=13 .(i)
2x+9
=13−x
On squaring, we get
2x+9=x
2
+169−26x
⟹x
2
+160−28x=0
⟹x
2
−20x−8x+160=0
⟹(x−20)(x−8)=0
∴x=20 or x=8
But x=20 does not satisfy (i)
∴x=8 is the solution of (i)
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