Algebra

Question 1

a² - b²

Answer 1

(a + b)(a - b)

Question 2

(a + b)²

Answer 2

(a + b)(a + b) = a² +2ab + b²

Question 3

(a - b)²

Answer 3

(a - b)(a - b) = a² -2ab + b²

Question 4

What are the ways of solving linear equations?

Answer 4

• Substitution: solve one equation for one of the variable and substitute that value into the other equation
• Combination: Add or subtract one equation from the other to cancel out one of the variables