1. -30y2
solution:
= (3y2)(-5y)
= -3y × 2 × 5y
= -30y2
2. -48x
solution:
= (6 × 2) × ( -4×)
= 6 × 2 × 4x
= -48x
3. 72m³
= 3 × 2m × 3m × 4m
= 72m³
4. 20a² - 19a - 6
solution:
= (5a -6)(4a + 1)
= 5a(4a + 1) - 6 (4a + 1)
= 5a × 4a + 5a - 6 × 4a - 6
= 20a² + 5a - 24a - 6
= 20a² - 19a - 6
5. -24ײ + 10x + 4
solution:
= (8x + 2)(-3x + 2)
= 8× ( -3× + 2) + 2 ( -3× + 2)
= -8× × 3x + 8x × 2 - 2 × 3x + 2 × 2
= -24x² + 16x + 6y + 2 × 2
= -24x² + 16x + 6y + 4
= -24ײ + 10x + 4
#CARRYONLEARNING
