Expand (x+2)^2: x^2 + 4x + 4 : remember that (a+b)^2 = a^2 + 2ab + b^2
So: x^2 + 4x + 4 - x^2 = 60
Answer:

Step-by-step explanation:
Write down the problem;

Simplify

Convert so that the fractions have a common denominator; multiply the numerator and denominator of both fractions such that the denominators are equal;

Add the fractions;

Convert to mixed number;

Collect like terms:
(7x+4x)−2y
Simplify:
11x-2y
Answer:
Answer 1: 85
Answer 2: c
Answer 3: 15
Step-by-step explanation:
Simple subtraction makes the trick.