First simplify the equation and next multiply the 20 with the x^2 and find a number that adds together to give you the middle
B-(-7)= -1
First negative multiply by negative is POSITIVE.
So: B+7= -1
Subtract 7 from both sides
B= -7-1
B= -8.
Answer: -8.
To Check Answer: Plug in the variable of B in the original equation.
So: -8-(-7)= -1
-8+7= -1
-1= -1
If the Solution works out the answer is right.
A. One or two or more numbers, algebraic expression, or like that when multiplied together produce a given product.
Hope this helps :)
1 (B), because 3+-2=1, and 5+-4=1, which amounts to 1/1, or whole number 1.
