" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
=X² - 3X + 5X - 15
=X² + 2X - 15
b. (2X + 3)(X - 4) =2X ×( X - 4) + 3 × (X - 4)
=2X² - 8X + 3X - 12
= 2X² - 5X - 12
c. (2X + √5)(2X - √5) = ga tau
d. (4a + 5b)(4a - 5b) = 4a × (4a - 5b) + 5b ( 4a - 5b)
= 16b² - 20ab + 20ba - 25b²
= 16b² - 20ab + 20ab - 25b²
= -9b² - 0