この因数分解の解き方を教えて欲しいです

-x+3x²+x-3=0 すなわち (x+1)(x-1)(x-3)=0 A= =

5問とも正しい方を教えてください！

2 ( )内から適切なほうを選びなさい。 AB 1) I (have already known / had already known) the story before I heard it from him. 2) The boy is tired because he (played / had played) in the park all day. 3) The bridge (have had no problem / had had no problem) until the big storm came. 4) Ryo (had been studying / was studying) with his friends until the bell rang. 5) She realized that she (has left / had left) her notebook on her desk.

5問とも正しい方を教えてください🙏

2 ( )内から適切なほうを選びなさい。 AB 1) I (have already known / had already known) the story before I heard it from him. 2) The boy is tired because he (played / had played) in the park all day. 3) The bridge (have had no problem / had had no problem) until the big storm came. 4) Ryo (had been studying / was studying) with his friends until the bell rang. 5) She realized that she (has left / had left) her notebook on her desk.

教えてください🙏🏻🙏🏻至急です！！！

128 (1) 108 29 次の硬貨を全部または一部使って, ちょうど支払うことができる金額は何 10円硬貨5枚,100円硬貨3枚,500円硬貨 3枚 (2)10円硬貨 2枚,50円硬貨3枚,100円硬貨 4枚

5問とも正しい方を教えてください！

2( )内から適切なほうを選びなさい。 1) I (have already known/ had already known) the story before I heard it from him. 2) The boy is tired because he (played / had played) in the park all day. 3) The bridge (have had no problem / had had no problem) until the big storm came. 4) Ryo (had been studying / was studying) with his friends until the bell rang. 5) She realized that she (has left / had left) her notebook on her desk.

解き方と答えを教えてください

107 √x2+2x+1-√x2-6x+9 をxの多項式で表せ。 B Clear 108 次の方程式, 不等式を解け。

(3)の問題です！！途中式を教えて欲しいです🥺

□ 42 次の式を因数分解せよ。 a²(b+c)+b² (c+a)+c² (a+b)+2abc (2) 3) (a+b-c)(ab-bc-ca)+abc ab(a+b)+bc(b+c)+ca(c+a)+3abc

緯度60度一周は約何kmか。 この問題はどうやって考えたらいいんですか

🚨【コミュ英Ⅱ to不定詞】🚨今to不定詞のbe動詞＋to不定詞というのをやっているのですが、このbe動詞＋to不定詞というのはどういった感じで使うんですか？あと、どうやって文の中にbe動詞＋to不定詞を入れる必要があると判断するのですか？ 例えば If we are to... Read More

この問題の解き方を教えて欲しいです。答えは交点が45個で三角形が120個です。

B clear 273 平面上の10本の直線が,どの2本も平行でなく,どの3本も1点で交わら ないとき,交点は何個あるか。また,三角形は何個できるか。