x1:y1 = x2:y2 4:-2 = x2:5 x2 = (4*5)/-2 x2 = -10
x2 - 3x + 2 = 0
If: x2-4 = 0 Then: x = 2
(6.3)2 = 39.69 ======
x2 + 2y = 52 + 2*2 = 25 + 4 = 29
x = 2
X2 or 2 times x?
If you have an equation of x2 plus x2, it is the same as saying 2 times x plus 2 times x. This can be written as 2x + 2x or x2 + x2. It is the same, then, as 4x. For example, if x equals 5: 2(5) + 2(5) = 10 + 10 = 20. 20 also equals 4(5).
x = √(2-x) x2 = 2-x x2 + x = 2 x2 + x - 2 = 0 (x+2)(x-1) = 0 x = 1 or -2
If "X2-2" refers to X * 2 - 2, the answer is X = 1; If "X2-2" refers to "X squared" - 2, the answer is X = square root of 2 (√2)
x2 - 4x + 4 = 0 (x - 2)(x - 2) = 0 x = 2
do you mean x2 + 3x + 2 ? Factors are (x +2)(x+1)