Answer:
A
Step-by-step explanation:
The answer would be (x+2) (x+1)
If the discriminant is negative no real solution exists.
If the discriminant is equal to 0 only one real solution exists.
If the discriminant is positive 2 real solutions exist.
The discriminant:
D = b² - 4 a c
1 ) - 7 x² + 6 x + 3 = 0
D = 6² - 4 · ( - 7 ) · 3 = 36 + 84 = 120 > 0
Answer: b) two solutions
2 ) - 8 x² - 8 x - 2 = 0
D = ( - 8 )² - 4 · ( - 8 ) · ( - 2 ) = 64 - 64 = 0
Answer: a ) one solution
After substituting in what the symbols are really supposed to be it looks like this: 19-33/11+5*20. Use PEMDAS and plug it in to a calculator
NO parenthesis
NO exponents
Multiplication: 5*20=100
19-33/11+100
Division: -33/11= -3
19-3+100
Addition: -3+100= 97
19+97
ANSWER: 116
