Convert feet and inches to inches plus inches. Then use the cm per inch conversion factor.
This is an expression and you do not solve an expression, but you can factor this one.X2 + 3X4X2(1 + 3X2)========
x=8
You didn't state what the problem is. Quite often you will want to either factor it, or solve the equation (in this case) 56x3 - 170x2 + 98x = 0. In this case, first take out the common factor "x". Then use the quadratic formula on what is left. (If, for example, 5 is a solution, then x - 5 is a factor.)
2y + 7x + y-1?
467
Since 7, -42, and 63 can be divided by 7, the problem can be written as: 7(x² - 6xy + 9y²) now you can factor the problem within the parentheses: 7(x - 3y)(x - 3y)
4x3+12x2+3x+9
this problem cannot be factored
n = 28
divide both sides by 2
x=8