因数分解L3-1-3(8問)
次の式を因数分解せよ。
4x2-9
解答○ ×16a2-25
解答○ ×36a2-25
解答○ ×4x2-49
解答○ ×9x2-16y2
解答○ ×100a2-9b2
解答○ ×36x2-49y2
解答○ ×49x2-144y2
解答○ ×問題と解答
4x2-9(2x+3)(2x-3) 16a2-25(4a-5)(4a+5) 36a2-25(6a+5)(6a-5) 4x2-49(2x+7)(2x-7) 9x2-16y2(3x-4y)(3x+4y) 100a2-9b2(10a-3b)(10a+3b) 36x2-49y2(6x-7y)(6x+7y) 49x2-144y2(7x+12y)(7x-12y)
