If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying
7r2 + 10 = 80
Reorder the terms:
10 + 7r2 = 80
Solving
10 + 7r2 = 80
Solving for variable 'r'.
Move all terms containing r to the left, all other terms to the right.
Add '-10' to each side of the equation.
10 + -10 + 7r2 = 80 + -10
Combine like terms: 10 + -10 = 0
0 + 7r2 = 80 + -10
7r2 = 80 + -10
Combine like terms: 80 + -10 = 70
7r2 = 70
Divide each side by '7'.
r2 = 10
Simplifying
r2 = 10
Take the square root of each side:
r = {-3.16227766, 3.16227766}
| 2x+9(2)+1x-5(2)=50 | | 6(2x+7)=78 | | 1672.992=2*3.14*51.84+2*3.14*7.2*h | | 15319=525+.0575(15319-30000) | | 6(r-5)=-66 | | y=-x(-6) | | 3z^2+17+20=0 | | 3x+2x+5x+5=40 | | 10(x-4)=50 | | 7-7x=7x+5x | | -5(5x-3)+4x=120 | | (5x+6)(7x+7)= | | 2a^2-4=126 | | bx-1=63 | | X-y=c(X) | | 4x+14=9x-35 | | 2y^2+6y+5=0 | | 2(m+3)=4m-k | | 7x-6=-2x+3 | | 9-5x^2=-71 | | 11x+2=14x-7 | | y=2x+1(X) | | 2(2x-4)=-20 | | 94.9536=20.3472+11.304h | | 15-(-42)= | | 880=2n^2-4n | | 1672.992=2*3.14*r^2+2*3.14*7.2*h | | 5(x+7)-6(x+6)=0 | | N^2=8n-16 | | t=2m(m) | | 3(5)+7(-6)= | | 1x-3=3x-13 |