Math, asked by fiza6931, 7 hours ago

Q.)Expand
(a + 2) \: (a - 1)


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Answers

Answered by alpha14
1

Answer:

a²+(2-1)a+2 x -1

a²+a-2

Step-by-step explanation:

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Answered by missfairy01
18

\pink{\bold{\underline{♧ \: your \: Answer \: ♧:}}}

 = a {}^{2}  + a - 2.

\blue{\bold{\underline{\underline{step-by -step\: explanation:}}}}</p><p>

(a + 2) \: (a - 1)

 = a \: (a - 1) +  \: (a - 1)

 = a {}^{2}  \:  - a \:  + 2a - 2

 = a {}^{2}  \:  + ( - a + 2a) -

2(combining \: like \: terms \: )

 = a {}^{2}  + a - 2

Hence, (a + 2) ( a - 1 )

 = a {}^{2}  \:  + a - 2.

\purple{\bold{\underline{\underline{Written  \: by \: ♤ }}}}

@MissFairy01

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