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(sin(x/4))^2-x
(cos(x/4))^2-x
(sin(x/4))^2-x
(-8*x)/(x^2+1)
2.91/3
| W+20=-8-w | | (x-2)3/2=16 | | f(x)=(x+1)-11 | | 8x+3=55 | | 2m-7=10+5m+7 | | (1/4)^x=8^x-1 | | f(x)=(x+1)-12 | | 7x+9=3x+9x | | (2x-3)3+2x=15 | | 7k+4=3k | | W^2+9=21 | | -10w-1=5-9w-2w | | 16=x(6+x) | | w/6=15 | | 10w-1=5-9w-2w | | 7y+1=1-9y | | 5n-6=15-n | | 7+-14r+7r^2=0 | | t/10=12 | | -1+9f=8f-8 | | 5v-5=-4(v-1) | | -9m+10=-8m | | 9(y+3)=2y-36 | | 2q+10=4q-2 | | 3y+22=7(y+6) | | 2x-4y=60 | | x-10/7=7 | | -9(x-9)=-4x+46 | | 8+5g=3g | | 4y-2=7y+10 | | -(b+5)+12=-9b+8 | | -31=7y+4(y-5) |