Question

3x²+5x²-4x+9x+8-4 add algebra expression​

Answer 1

Answer:

= 3x²+5x²-4x+9x+8-4

= 8x²+5x+4

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Answer 2

Answer:

$3 {x}^{2} + 5 {x}^{2} - 4x + 9x + 8 - 4 \\ 8 {x}^{2} + 5x + 4 = 0 \\ 8 {x}^{2} + 5x = - 4$