The answer is 35. 2x2-6x+15
2(-2)2-6(-2)+15
8+12+15
35.
And this is not calculus...
Plus minus negative equals plus + plus because the negatives cancel out.
Positive (Plus) times Negative (Minus) always equals a negative (minus).
Negative times positive equals negative.
x equals negative b plus or minus the square root of b squared minus 4bc over 2a
2
All the time
Negative 11
x= Negative 4
6
x = plus or minus 6.
(-3)-(4)=(-3)+4=1 Minus times minus equals plus. The reason for this we need not discuss.
54.3 squared