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5x² + 2x -3 when x=3​

Sagot :

Answer:

[tex]5 {x}^{2} + 2x - 3 \\ = 5 ({3)}^{2} + 2(3) - 3 \\ = 5(9) + 6 - 3 \\ = 45 + 6 - 3 = 48 [/tex]

hope can help po