Mathematics, 05.02.2021 22:50 matilda67

If C = x2 + 7 and D = 3x2 - 4x + 3, find an expression that equals 3C + 3D in standard form.

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If C = x2 + 7 and D = 3x2 - 4x + 3, find an expression that equals 3C + 3D in standard form....