Question

Factor the expression below.81x^2-100

Answer 1

difference of 2 squares
9x and 10 are sorts

Answer 2

* square roots

Answer 3

To factor 81x2 - 100 use difference of squares formula, because both terms are perfect squares.
The formula is a2 - b2 = (a - b)(a + b)
In this example we have

Answer 4

81x2 - 100 = (9 x)2 - 102 = (9 x - 10)(9 x + 10)

Answer 5

thank you so much