Question

factorise:12a³-15a²-7a​

Answer 1

Given:-

• 12a³ - 15a² - 7a

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To find:-

• Factorise the following.

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Solution:-

Here,

• 12a³ - 15a² - 7a

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Now,

$\tt\longrightarrow{\red{12a^3 - 15a^2 - 7a}}$

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$\tt\longrightarrow{\green{12a^3 - (12 - 7)a^2 - 7a}}$

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$\tt\longrightarrow{\pink{12a^3 - 12a^2 + 7a^2 - 7a}}$

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$\tt\longrightarrow{\purple{12a(a - 1) + 7a(a - 1)}}$

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$\bf\longrightarrow{\orange{(a - ) (12a + 7a)}}$

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$\: \: \: \: \: \: \: \: \: \: \: \: \boxed{\tt{\bigstar{Factorised{\bigstar}}}}$