A physical property of a solid could be smoth or hard
Answer+Step-by-step explanation:
x² – 2x + 3 = (x - 1)² + 2
Then
The vertex of the parabola is the point (1 , 2)
then
The graph number 1 (on top) is the one which represents f
Answer:
![2x+3](https://tex.z-dn.net/?f=2x%2B3)
Step-by-step explanation:
![4x^2-9=(2x)^2 -3^2=(2x-3)(2x+3)](https://tex.z-dn.net/?f=4x%5E2-9%3D%282x%29%5E2%20-3%5E2%3D%282x-3%29%282x%2B3%29)
4. Area is found by length times width
area is (12m + 18) and width is 6
its (12m + 18) = 6 ( 2m + 3 )
5. 21x + 51xy and 7(3x + 8xy). She is incorrect. GCF means the greatest common factor so to be correct the factors inside cannot have something in common. Since they have x in common its incorrect. the correct factor by GCF would be 7x(3 + 8y) because all common factors are factored out.
<span> ∫ [ln(√t) / t] dx
let √t = u
t= u² → dx = 2u du
substitute in the integral
∫ [ln(√t) / t] dx = ∫ (ln u / u²) 2u du = ∫ (ln u / u²) 2u du = 2 ∫ (ln u / u) du
let ln u = x → d (ln u) = dx→ (1/u)du = dx
substituting again
2 ∫ (ln u / u) du = 2 ∫ x dx= 2 x²/ 2 = x² + c which,
substituting ln² u + c
as of the first
substitution ln²(√t) + c
it concludes that
∫ [ln(√t) / t] dx = ln²(√t) + c
hope it helps
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