Question

Expand and simplify with steps please

Answer 1

36x^2 - 49y^2

Explanation:

(6x + 7y)(6x-7y)

= (6x × 6x) + (6x × -7y) + ( 7y × 6x) + ( 7y × -7y)

 = 36x^2 - 42xy + 42xy - 49y^2

= 36x^2 - 49y^2

Answer 2

By identity,

(6x + 7y)(6x - 7y) = 36x² - 49y²

step - by - step multiplication,

• (6x + 7y)(6x - 7y)

• (6x × 6x) - (6x × 7y) + (7y × 6x) + (7y × - 7y)

• 36x² - 42xy + 42 xy - 49 y²

• 36x² - 49y²