Question

Multiply (2ab - b²) and (3a² + 4b) and verify the result for a = 2 and b = -2​

Answer 1

Answer:

Why can cotton be spun into strong yarn? What makes cotton clothes ideal for

summers?

Step-by-step explanation:

Why can cotton be spun into strong yarn? What makes cotton clothes ideal for

summers?

Answer 2

Answer:

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➡️ (2ab-b²)(3a²+4b)

➡️ 2ab(3a²+4b)-b²(3a²+4b)

➡️ 6a³b + 8ab² - 3a²b² - 4b³

Put value of a = 2 and b = -2

➡️ 6×(2)³×(-2)+8×2×(-2)²-3×(2)²×(-2)²-4(-2)³

➡️ 6×8×(-2) + 16×4 - 3×4×4 - 4×(-8)

➡️ 48×(-2) + 64 - 12×4 + 32

➡️ -96 + 64 - 48 + 32

➡️ -32 - 48 + 32

➡️ -48