Micheal367jgo Micheal367jgo Math Answered Practice! Express the given equation in standard form, then write the values. A, B, C1) 3x² - 4 = 2x - 9 2) 2(2x - 5) = -4x(x - 1) 3) 18x2 +21= 12x² - 4 4)-(x + 3)² = -4x² + 8 5)-2x²2x = 2x - 11