Wartośc wyrazenia ∛3 ⅜ + (-3)² · x - (1-2¼)² dla x= 1,5 jest równa?
3 ⅜ + (-3)² · x - (1-2¼)² dla x= 1,5
3 ⅜ + 9 · x - (-1¼)² = 3 ⅜ + 9x + 5/4 * 5/4 = 3 ⅜ + 9x + 25/16 = 54/16 + 9x + 25/16 = 79/16 + 9x = 79/16 + 9 * 1,5 = 79/16 + 13,5 = 79/16 + 216/16 = 295/16 = 18 7/16
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3 ⅜ + (-3)² · x - (1-2¼)² dla x= 1,5
3 ⅜ + 9 · x - (-1¼)² = 3 ⅜ + 9x + 5/4 * 5/4 = 3 ⅜ + 9x + 25/16 = 54/16 + 9x + 25/16 = 79/16 + 9x = 79/16 + 9 * 1,5 = 79/16 + 13,5 = 79/16 + 216/16 = 295/16 = 18 7/16