Note: In option A, it should be "+" instead of "(".
Given:
The expression is
![-2x(x+y-3)+3(-x+4y)+y(3x+5y-3)](https://tex.z-dn.net/?f=-2x%28x%2By-3%29%2B3%28-x%2B4y%29%2By%283x%2B5y-3%29)
To find:
The equivalent expression.
Solution:
We have,
![-2x(x+y-3)+3(-x+4y)+y(3x+5y-3)](https://tex.z-dn.net/?f=-2x%28x%2By-3%29%2B3%28-x%2B4y%29%2By%283x%2B5y-3%29)
Using distributive property, we get
![=-2x(x)-2x(y)-2x(-3)+3(-x)+3(4y)+y(3x)+y(5y)+y(-3)](https://tex.z-dn.net/?f=%3D-2x%28x%29-2x%28y%29-2x%28-3%29%2B3%28-x%29%2B3%284y%29%2By%283x%29%2By%285y%29%2By%28-3%29)
![=-2x^2-2xy+6x-3x+12y+3xy+5y^2-3y](https://tex.z-dn.net/?f=%3D-2x%5E2-2xy%2B6x-3x%2B12y%2B3xy%2B5y%5E2-3y)
On combining like terms, we get
![=-2x^2+5y^2+(-2xy+3xy)+(6x-3x)+(12y-3y)](https://tex.z-dn.net/?f=%3D-2x%5E2%2B5y%5E2%2B%28-2xy%2B3xy%29%2B%286x-3x%29%2B%2812y-3y%29)
![=-2x^2+5y^2+xy+3x+9y](https://tex.z-dn.net/?f=%3D-2x%5E2%2B5y%5E2%2Bxy%2B3x%2B9y)
The expression
is equivalent to the given expression.
Therefore, the correct option is A.
Answer:
x ≥ 15
Step-by-step explanation:
First you need to make an equation for this. If he already has $50 and needs <u>at least</u> 500 and deposits $30 per day we can put the equation as 30x + 50 ≥500. The reason we put a greater than or equal sign (≥) rather than the less than or equal sign (≤) is because Fred needs <u>at least</u> meaning you can have exactly or 500 exactly. To solve this you would have to do inverse operation and subtract 50 on both sides. You should have 30x≥450. Then divide 30 on both sides. Your answer should be x ≥ 15.
Answer:
that's alot but no english speak english it is long
50• 40= $2000
The answer is multiply 50 and 40