Use the FOIL method (First, Outside, Inside, Last)
Reorder:
(2x + 5)(-4x + 7)
2x(-4x) = -8x²
2x(7) = 14x
5(-4x) = -20x
5(7) = 35
-8x² + 14x - 20x + 35
Combine like terms
-8x² (+ 14x - 20x) + 35
-8x² - 6x + 35
-8x² - 6x + 35 is your answer
hope this helps
Rectangle:
P = 2 (L+W) but length is 2 meters longer than wide
then L = W + 2, So
P = 2 (L + W)
24 = 2(W+2+W)
24 = 2 (2 + 2W)
24 = 4 + 4W
So 4W = 24 -4 =20
W = 20/4= 5, L = 5+2= 7
Double check
24 = 2*(5+7) = 2 *12 = 24
Answer:
8x-3
Parentheses; Exponents; Multiplication; Division; Addition; Subtraction
Answer:
Before Tax Price: $110.00
Sale Tax: 6.10% or $6.71
After Tax Price: ($116.71)
Step-by-step explanation: