0
x2=9x-20
x2-9x+20=0
Factor:
(x-4)(x-5)=0
x={4,5}
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∙ 13y ago
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Solve x2 equals 64?
x2 = 6482 = 64x = 8
X2 plus 7 equals 36?
if x2 + 7 = 37, then x2 = 29 and x = ±√29
Find a counterexample if x equals -5 then X2 equals 25?
In ordinary mathematics, assuming that x = X and that X2 denotes x2 or x-squared, there cannot be a counterexample since the statement is TRUE. However, there are two assumptions made that could be false and so could give rise to counterexamples. 1. x is not the same as X. If, for example X = 4x then X = -20 so that X2 = 400. 2a. X2 is not X2 but X times 2. In that case X2 = -10. 2b. X2 is x2 modulo 7, for example. Then X2 = 4.
X2 equals 11x - 10?
x2 = 11x - 10 ∴ x2 - 11x + 10 = 0 ∴ (x - 10)(x - 1) = 0 ∴ x ∈ {1, 10}
What is the derivative of 3cosx2?
I'm assuming your question reads "What is the derivative of 3cos(x2)?" You must use the Chain Rule. The derivative of cos(x2) equals -sin(x2) times the derivative of the inside (x2), which is 2x. So... d/dx[3cos(x2)] = -6xsin(x2)
What does x2 plus x2 equals?
x2 + x2 = 2x2
What is 9x20?
it is 180.
What does 9x20 equal?
180
If y equals -2 when x equals 4 find x when y equals 5?
x1:y1 = x2:y2 4:-2 = x2:5 x2 = (4*5)/-2 x2 = -10
What number is needed to complete the square x2 23x equals 0?
x2 23x equals 0
What does x2 plus 6-40 equal?
It equals x2 - 34
Solve x2 equals 64?
x2 = 6482 = 64x = 8
How do you isolate x2 10x2 - 36y2 equals 100?
x2 − 36y2
If c equals x2 then what is Cx2?
if c = x2 then cx2 = x4
Which values are solution to the inequality of x2 equals 64?
x2≤64
X2 plus 7 equals 36?
if x2 + 7 = 37, then x2 = 29 and x = ±√29
How do you solve x2 81 equals 0?
x: x2 - 81 = 0
