Soal Kumon Level H -

She picked up her pencil.

Problem 8: x² - 4x - 12 = 0 . Multiply to -12, add to -4? -6 and +2. (x - 6)(x + 2) = 0 → x = 6, x = -2.

(x + 2)(x + 3) = 0.

x + 2 = 0 → x = -2

So Rina breathed out. She looked at x² + 5x + 6 again. She drew her two parentheses: ( _ + _ )( _ + _ ). soal kumon level h

Her mother leaned over. “Done?”

“Ready,” she said. And for the first time, she meant it. She picked up her pencil

x + 3 = 0 → x = -3