4 years ago

(5x2 + 2x - 1) + (4x2-x-9)

Mathematics

1 answer:

natima [27]4 years ago

5 0

Answer:

$5 {x}^{2} + 2x - 1 + 4 {x}^{2} - x - 9 \\ 5 {x}^{2} + 4 {x}^{2} + 2x - x - 1 - 9 \\ = 9 {x}^{2} + x - 10$

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