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
(6x + 3y)(6x − 3y)
(6x)² - (3y)²
control
320√2
4 * 8√200
= 4 * 8√2√100
= 32 * √2 * 10
= 320√2
Here's what I got, hope it helps.
65kg
