Question

Faktorkan bentuk aljabar berikut :
1. 16x² - 25
2. 9p² - 4r²
3. 2m² - 11mn + 5n²

Answer 1

Penyelesaian :

1. 16x² - 25 = (4x + 5)(4x - 5)
2. 9p² - 4r² = (3p + 2r)(3p - 2r)
3. 2m² - 11mn + 5n² = (2m² - 10mn) + (-mn + 5n²)
                             = 2m(m - 5n) - n(m - 5n)
                             = (2m - n)(m - 5n)

semoga membantu:)

Answer 2

1. 16x²-25 = (4)²x²-(5)²
= (4x²) - (5)²
= (4x+5) (4x-5)
2. 9p²-4r² = (3)²p² - (2)²r²
= (3p²) - (2r²)
= (3p+2r) (3p-2r)