The answer to the question is C
Because when you subtract a negative number the signs cancel out and become and addition problems
Answer:
Step-by-step explanation:
- 25 × 386 + 3219 ÷ 2 =
- 9650 + 1609.5 =
- 11259.5
X²+bx=c
x=[-b+√(b²+4c)]/2
2x(x+5)=4
2x²+10x=4
x²+5x=2
x=[-5+√(5²+4*4)]/2
if b=-1/2 and c=-9/2
x= {1/2+√[(1/2)²+4*(-9/2)]}/2
