2次方程式L1-3-5(8問)
2次方程式を解け
x2-10x+9=0
解答○ ×x2+15x+56=0
解答○ ×x2-5x-36=0
解答○ ×x2+5x-24=0
解答○ ×x2-13x+42=0
解答○ ×x2+17x+72=0
解答○ ×x2+x-56=0
解答○ ×x2-2x-48=0
解答○ ×問題と解答
x2-10x+9=01,9 x2+15x+56=0-7,-8 x2-5x-36=0-4,9 x2+5x-24=03,-8 x2-13x+42=06,7 x2+17x+72=0-8,-9 x2+x-56=07,-8 x2-2x-48=0-6,8
