Question

(a + 5)²
2. (3xy - 7)²
3. [X + (y-2)]²
4. (2x + 3y + 5)²
5. (3a - b + 2c)²​

Answer 1

${a}^{2} + {5}^{2} + 2 \times 5 \times a$

${3xy}^{2} - 2 \times 7 \times 3xy + {7}^{2}$

${x }^{2} + {(y - 3)}^{2} + 2 \times x \times (y - 3)$

${(2x + 3y)}^{2} + {5}^{2} + 2 \times (2x + 3y) \times 5$

${(3a - b) }^{2} + {2c}^{2} + 2 \times (3a - b) \times 2c$