Question 11 Mark(5m + 3n) (5m – 3n) = ___ – ___ = ___ – ___Answer(5m + 3n) (5m – 3n) = (5m)² – (3n)² = 25m² – 9n²View full question & answer→
Question 21 Mark(98)² = (100 – 2)² = 10000 – ___ + ___ = ___Answer(98)² = (100 – 2)² = 10000 – 400 + 4 = 9604View full question & answer→
Question 31 Mark(101)² = (100 + 1)² = ___+ ___ + 1² = ___Answer(101)² = (100 + 1)² = 10000 + 200 + 1² = 10201View full question & answer→
Question 41 Mark(2x – 5y)² = __ – 20xy + __Answer(2x – 5y)² = 4x² – 20xy + 25y²View full question & answer→
Question 51 Mark(x + 2y)² = x² + ___ + 4y²Answer(x + 2y)² = x² + 4xy + 4y²View full question & answer→