Find the product:(3x + 8) (5 – 2x)

1.	Find the product:(3x + 8) (5 – 2x)
Answer» (3x + 8) (5 – 2x) = 3x (5 – 2x) + 8(5 – 2x) = 3x × 5 – 3x × 2x + 8 × 5 – 8 × 2x = 15x – 6x² + 40 – 16x = – 6x² + 15x – 16x + 40 = – 6x² – x + 40

Answer»

(3x + 8) (5 – 2x)

= 3x (5 – 2x) + 8(5 – 2x)

= 3x × 5 – 3x × 2x + 8 × 5 – 8 × 2x

= 15x – 6x² + 40 – 16x

= – 6x² + 15x – 16x + 40

= – 6x² – x + 40

Discussion