If it's not what You are looking for type in the equation solver your own equation and let us solve it.
4^(x+2)-2^(2x+1)=112
We move all terms to the left:
4^(x+2)-2^(2x+1)-(112)=0
We move all terms containing x to the left, all other terms to the right
4^(x+2)-2^(2x+1)=112
| 10x+20=129 | | 200x=500,000 | | P(x)=200x-500,000, | | X²+18x+15=0 | | 10x+27−5x−46=32+3x−19 | | a+2a-18+90=180 | | f^2-(4f-2f²-8)=2f^2+4f-8 | | 1.5x–2.5=4.5 | | 3a/7+5a=2 | | (x+40)°=(3x-20)° | | 45/5+5y/6=180 | | 5x5=17+ | | 3x=52/25 | | 3x=52/28 | | X+4=12x+43/35 | | 700x=895x | | 25x=0,1x^2 | | 6y-5=3y+13 | | 2/p+3/p=15 | | 3a-6=-24 | | X/3+y=180,y=20 | | 16x-28=-12x+9+47 | | 49x+56=12x+20+221 | | 3y+32=9y | | -3(-3x+5)=4(3x-8)+23 | | 45/3+3y/3=180 | | 6x+8=8x+16 | | X/3+3y/3=180 | | 20x=0.15x^2 | | 4x+16+4=6x | | x-x*0,1=270 | | x-xx0,1=270 |