Answer:
[tex] = 6 {x}^{2} + 2x - 5 \\ [/tex]
Step-by-step explanation:
[tex]4 {x}^{2} - 5x + 3 + 2 {x}^{2} + 7x - 8 \\ 4 {x}^{2} + 2 {x}^{2} - 5x + 7x + 3 - 8 \\ = 6 {x}^{2} + 2x - 5[/tex]
hope this helps
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