If it's not what You are looking for type in the equation solver your own equation and let us solve it.
f(3)=-9(3)+7
We move all terms to the left:
f(3)-(-9(3)+7)=0
We add all the numbers together, and all the variables
f3-(-86)=0
We add all the numbers together, and all the variables
f^3+86=0
We do not support efpression: f^3
| (1/9^x)=(3^x/(3*81^x) | | 6x-1=19+x | | 8x-187=99-5x | | (1/9^2)=(3^x/(3*81^x) | | 4/12=z/9 | | 4x-1=3x- | | Y=2x2-31 | | 9x-11+5x+16=90 | | 9x-11+5x+16=180 | | .5x+86.8=80.8 | | 250x+35=0.5 | | 10=-6v+2(v-5) | | 10y+8=y | | 4x+11/2x=3 | | 2p=-350-Q^ | | 4x=11/2x=3 | | 6x^2-21=-5x | | X+9x-36=6 | | 4(E-3)-(3e-5)=0 | | b(b+32)=6(8+5b) | | -6u+4(u+6)=4 | | S^2-s=22+3s | | 7d^2-8d=0 | | 4x+8=3x+21 | | 3x-7=-1-x | | 38=24/100x | | x=485/85-12/17 | | 88=x-4x/15 | | 15.78=1/2x+3.28 | | -6x-3=2x+21 | | -31=5-4x | | 4x*^2+x+9=0 |