Question

binomios conjugados. (4x+5)(4x-5)=

(2x+3)(5x-6)=

(3x+8)(3x-2)=

por favor ayudenme

Answer 1

(4x+5) (4x-5) = (4x)² - (5)² = 16x² - 25
(2x+3) (2x-3) = (2x)² - (3)² = 4x² - 9
(3x+8)  (3x-8) = (3x)² - (8)² = 9x² - 64

Answer 2

(4x + 5) (4x - 5) = 16x² - 25

(2x + 3) (5x - 6) = 10x² - 12x + 15x - 18 = 10x² + 3x - 18

(3x + 8) (3x - 2) = 9x² - 6x + 24x - 16 = 8x² +18x - 16