Question

Please guys can you help me - Please refer the pic and tell me the answer - Topic algebraic expressions.

Answer 1

Answer:

$(10 {x}^{2} + 5x - 3) + (7 {x}^{2} - 2x + 7) \\ (10 {x}^{2} + 7 {x}^{2} ) + (5x - 2x) + ( - 3 + 7) \\ 17 {x}^{2} + 3x + 4$