Answer:
31
Step-by-step explanation:
x+y = 57
x = y+5
=>
y + 5 + y = 57
=> 2×y + 5 = 57
=> 2×y = 52
=> y = 26
=> x = 26 + 5 = 31
Answer:
8x2- 10x- 3 = 46
Step-by-step explanation:
The answer is B I have provided a picture to show the solving steps
Answer:
y = x² - 2x - 8
Step-by-step explanation:
Given
y = (x - 4)(x + 2)
Each term in the second factor is multiplied by each term in the first factor, that is
x(x + 2) - 4(x + 2) ← distribute parenthesis
= x² + 2x - 4x - 8 ← collect like terms
= x² - 2x - 8 ← in standard form
