Question

Simplify (4+√3)(4-√3)

Answer 1

13

Explanation:

(4+√3)(4-√3) = (4)^2-(√3)^2 =16-3 = 13

Answer 2

Explanation:

(a + b)(a -b) =a² - b²

a = 4 and b = √3

(4 + √3)(4 - √3)= 4² - (√3)²

= 16 - √3*√3

= 16 - 3

= 13