Question

What is the sum of the expressions 4x + 3y², 7xy – 4y² and 6x

2

– x ?​

Answer 1

Answer:

We have

(i) 3x + 7x = (3 + 7)x = 10x

(ii) -5xy + 9xy = ( -5 + 9)xy = 4xy

Answer 2

Answer

• 4
• $4x + 3y + 7xy - 4y {}^{2} + 6x \\ 4x + 6x + 3y {}^{2} - 4y {}^{2} - 7xy \\ 10x - y {}^{2} - 7xy$