3 years ago

Can someone help me work out this

Mathematics

1 answer:

bearhunter [10]3 years ago

8 0

Answer:

x³ - 5x² + 4x

Step-by-step explanation:

Given

x(x - 4)(x - 1) ← expand (x - 4)(x - 1) using FOIL

= x(x² - x - 4x + 4)

= x(x² - 5x + 4) ← distribute

= x³ - 5x² + 4x

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Given f(x) = 3x - 1 and g(x) = 2x-3, for which value of x does g(x) = f(2)? i e ls

masya89 [10]

Answer:

x=8

Step-by-step explanation:

4 0

3 years ago

1/b+x=3b/2x^2 - 1/x btw ^2 means square

AlekseyPX

Answer:

$x = \frac{ - 3b}{4} \: or \: b$

Step-by-step explanation:

$\frac{1}{b + x} = \frac{3b}{2 {x}^{2} } - \frac{1}{x}$

$= > \frac{1}{b + x} = \frac{3b - 2x}{2 {x}^{2} }$

$= > 2 {x}^{2} = (b + x)(3b - 2x)$

$= > 2 {x}^{2} = 3 {b}^{2} - 2bx + 3bx - 2 {x}^{2}$

$= > 2 {b}^{2} = 3 {b}^{2} + bx - 2 {x}^{2}$

$= > 3 {b}^{2} + bx - 4 {x}^{2} = 0$

$= > 3 {b}^{2} + 4bx - 3bx - 4 {x}^{2} = 0$

$= > b(3b + 4x) - x(3b + 4x) = 0$

$= > (3b + 4x)(b - x) = 0$

Hence,

$x = \frac{ - 3b}{4} \: or \: b$

8 0

3 years ago

What are solutions to the equation below x^2 +3x-18=0

uysha [10]

x^2+3x-18=0

(x+6)(x-3)

x=3,-6

7 0

3 years ago

Read 2 more answers

Plzz HELPP I'll give brainlist

Aliun [14]

Answer:

Second one. Trust me. I did it with calculator

7 0

3 years ago

4 pounds of tomatoes cost $8. How many pounds of tomatoes can you get with $14?

faust18 [17]

Answer:

7 pounds

Step-by-step explanation:

8 divided by 4 is 2 so $2 per pound

14 divided by 2 is 7 so therefore it would be 7 pounds

I had the wrong answer before sry haha

4 0

3 years ago