find f(2x+3)if f(x)=2x²-3x-1
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Answered by
3
g (x)=(2x+3)
(2x+3)=0
2x=0-3
2x=-3
x= -3/2
f (x)=2x^2-3x-1
f (-3/2)=2×-3/2-3× -3/2 -1
-3+9/2-1
-3×2+9-1×2/9
-6+9-2/9
-17
(2x+3)=0
2x=0-3
2x=-3
x= -3/2
f (x)=2x^2-3x-1
f (-3/2)=2×-3/2-3× -3/2 -1
-3+9/2-1
-3×2+9-1×2/9
-6+9-2/9
-17
Answered by
3
⭐hey there!!
=> f(x) = 2x²-3x -1
So we have to find f(2x+3) then put( 2x + 3) in place od x
=> f(2x+3) = 2(2x+3)²-3(2x+3) -1
=> f(2x+3) =2(4x²+12x+9) -6x - 9 -1
=> f(2x+3) = 8x²+ 24x +18 -6x -10
=> f(2x+3) = 8x²+18x +8 {answew}
_______________________________________
⭐hope it will help u
=> f(x) = 2x²-3x -1
So we have to find f(2x+3) then put( 2x + 3) in place od x
=> f(2x+3) = 2(2x+3)²-3(2x+3) -1
=> f(2x+3) =2(4x²+12x+9) -6x - 9 -1
=> f(2x+3) = 8x²+ 24x +18 -6x -10
=> f(2x+3) = 8x²+18x +8 {answew}
_______________________________________
⭐hope it will help u
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