Question

Which expression is equivalent to

(3x^2 + 2x - 4) + (5x^2 - 4x + 5) ?

8x^2 + 6x + 9


8x^2 + 2x + 1


8x^2 - 2x + 1


8x^2 + 6x + 9

Answer 1

8x^2-2x+1

• explaniation
• first remove the bracket

1. 3x^2+2x-4+5x^2-4x+5

• then collect like term
• 3x^2+5x^2+2x-4x-4+5
• then the answer will be
• 8x^2-2x+1
• thank you!!!!!