Question

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Answer 1

1. (7a + b)² = 49a² + 14ab + b²

2. (a² + 9) (a² - 9) = a⁴ - 81

3. (y - 12) (y + 12) = y² - 144

4. (5 - x)² = x² - 10x + 25

5. (1 - 4y)³ = 1 - 12y + 48y² - 64y³

6. (3m² - 5n³)^z = ....

7. (3/2 y² + 2/3 x²)³ = 8x⁶/27 + 2x⁴y² + 9x²y⁴/2 + 27y⁶/8

8. (2t + 1)³ = 8t³ + 12t² + 6t + 1

9. (x + 5) (x - 5) = x² - 25

10. (m - 2)³ = m³ - 6m² + 12m - 8