因数分解L4-1-1(8問)
次の式を因数分解せよ。
2x2+6xy+4y2
解答○ ×3a2-6ab-45b2
解答○ ×4a2+4a-120
解答○ ×6x2+48x+96
解答○ ×9x2-18x+9
解答○ ×6a2-54
解答○ ×9x2-144y2
解答○ ×4x2+24xy+36y2
解答○ ×問題と解答
2x2+6xy+4y22(x+y)(x+2y) 3a2-6ab-45b23(a+3b)(a-5b) 4a2+4a-1204(a+6)(a-5) 6x2+48x+966(x+4)2 9x2-18x+99(x-1)2 6a2-546(a-3)(a+3) 9x2-144y29(x-4y)(x+4y) 4x2+24xy+36y24(x+3y)2
