Answer:
8800
Step-by-step explanation:
Im on that to, maybe i can help you !! :)
Answer:
-4
Step-by-step explanation:
-2+3(-4)-5(-2)
PEMDAS says multiply and divide first
-2 -12 +10
Add and subtract from left to right
-14+10
-4
In order to find each of those values, we need to replace x in the appropriate function with the entry given for that function.
Part a
Replace x with 3 in the expression 3x+2:
Part b
Replace x with -2 in the expression 3x+2:
Part c
Replace x with -1 in the expression x²+x+1:
Part d
Replace x with 3 in the expression x²+x+1:
Part e
Replace x with a-2 in the expression 3x+2:
Part f
Replace x with a-2 in the expression x²+x+1:
Steps:
subtract 3 from both sides:
2x²-5x+1 - 3 = 3 - 3
Simplify:
2x² - 5x - 2 = 0
Solve with the quadratic formula :
for a = 2 , b = - 5 , c = - 2
x₁ = - ( - 5 ) +√ ( -5 )² - 4 * 2 ( - 2 ) / 2 * 2 =
x₁ = 5 + √ 41 / 4
x₂ = - ( - 5 ) - √ ( -5 )² - 4 * 2 ( - 2 ) / 2 * 2
x₂ = 5 - √ 41 / 4