Question

2. Write down the squares of the following
expressions
(i) 3x + 5y
(ii) 5y - 2z

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Answer 1

Answer:

$(3x + 5y) {}^{2} \\ (3x) {}^{2} + (5y ){}^{2} + 2 \times 3x \times 5y \\ 9 x {}^{2} + 25y {}^{2} + 30xy$

(ii)

$(5y - 2z) {}^{2} \\ (5y) {}^{2} + (2z) {}^{2} - 2 \times 5y - 2z \\ 25y {}^{2} + 4z {}^{2} + 20yz$

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Answer 2

Answer:

(i) (3x+5y)² = (9x²+25y²)

(ii) (5y-2z)² = (25y²-4z²)

Step-by-step explanation:

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