Factorisation of $a^{2} + 7 a + 10$ gives:

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a+1

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a+5

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a+2

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Solution

The correct options are
C
a+5

D
a+2

$a^{2} + 7 a + 10$ = $a^{2} + 5 a + 2 a + 10$ ( Splitting the middle term as 10 as 2 x 5 = 10 and 2 + 5 = 7)

= $a (a + 5) + 2 (a + 5)$

= $(a + 2) (a + 5)$

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Similar questions

Factorise $a^{2} + 7 a + 10$ + pa + 5p

Factorising and dividing $a^{2} + 7 a + 10$ by (a + 5) gives:

Select the factors of $a^{2} + 7 a + 10$

Divide (a^{2} + 7 a + 10) by (a + 5) .

A = ⎡ ⎢ ⎣ \begin{matrix} 3 & 2 & 0 1 & 4 & 0 0 & 0 & 5 \end{matrix} ⎤ ⎥ ⎦

A^{2} - 7 A + 10 = 0

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