So now we have….
-(-3.5) + (-12.8) = ?
{the double negative symbols change into a positive}
3.5 + (-12.8) = ?
3.5 - 12.8 = ?
Answer = -9.3
Your answer is a. -9.3
Hope this helps :)
Answer:20
Step-by-step explanation:
Answer:
x^2 -4x -21
Step-by-step explanation:
Here, we want to write a quadratic polynomial
We have the sum as -4
Let us have x as the variable
so the sum of the variables is -4x
while the product is -21 x^2
Two factors of 21 that can work here is -7x and 3x
So we have
x^2 - 7x + 3x -21
= x^2 -4x -21