Answer:
10x
Step-by-step explanation:
Add the 6 and 4 the x stays the same.
Answer:
It would be 5.5
for a better understanding, look it up on google
Answer:
-18.5
Step-by-step explanation:
Please- Parenthesis
Excuse -Exponets
My - Multiplication
dear- Division
aunt- Addition
sally- Subtraction
Answer:
She didn't put the sign's in the proper place, it should be ( x + 3 ) ( x - 7 )
Step-by-step explanation:
( x - 3 ) ( x + 7 ) = x² + 7x - 3x - 21 = x² + 4x - 21
( x + 3 ) ( x - 7 ) = x² - 7x + 3x - 21 = x² - 4x - 21