These are the last three quetions on my test and i really need the answers or help i have been trying for so long and don't understand them please help me!!!!!!!
1.) 5(2x+3)
2.) -3c-8+7c+10
3.) -5(x-1)+8x
The parentheses mean multiply.
1.) 5(2x+3) = 10x + 15
Combine like terms.
2.) -3c-8+7c+10 = 4c + 2
If you try to do number 3, we'll be glad to check your answer.
3.-5(x-1)+8x= 3x+5
I'd be happy to help you with these questions! Let's go through each of them step by step.
1.) To simplify the expression 5(2x+3), you can use the distributive property. This property allows you to multiply each term inside the parentheses by the coefficient outside the parentheses.
So, let's apply the distributive property to this expression:
5 * 2x = 10x
5 * 3 = 15
Therefore, the simplified form of 5(2x+3) is 10x + 15.
2.) In the expression -3c-8+7c+10, you can combine like terms. Like terms are those that have the same variable raised to the same power.
To simplify this expression, you need to combine the terms that have the same variable:
-3c + 7c = 4c
Now, let's combine the constant terms:
-8 + 10 = 2
Therefore, the simplified form of -3c-8+7c+10 is 4c + 2.
3.) For the expression -5(x-1)+8x, you can use the distributive property and simplify by combining like terms.
Apply the distributive property to the expression:
-5 * x = -5x
-5 * -1 = 5
Now let's simplify by combining like terms:
-5x + 5 + 8x
-5x and 8x are like terms because they have the same variable, x. So, you can combine them:
-5x + 8x = 3x
Therefore, the simplified form of -5(x-1)+8x is 3x + 5.
By following these steps, you should be able to simplify these expressions and find the answers. Good luck on your test!