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3 years ago

Multiply and simplify: (6x + 3y)(6x − 3y)

Mathematics

2 answers:

nasty-shy [4]3 years ago

5 0

Answer:

36x² - 9y²

Step-by-step explanation:

We see that the given expression (6x + 3y)(6x - 3y) looks just like the expression (a + b)(a - b). When multiplied out, this is a difference of squares identity that I highly recommend you memorise:

(a + b)(a - b) = a² - b²

Here, a = 6x and b = 3y, so plug these in:

(6x + 3y)(6x - 3y) = (6x)² - (3y)² = 36x² - 9y²

Masteriza [31]3 years ago

3 0

Answer:

36x² - 9y²

Step-by-step explanation:

(6x + 3y)(6x − 3y)

(6x)² - (3y)²

36x² - 9y²

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