Question

R^+15r+54 factorise it

Answer 1

Answer:

Your Question:

$r {}^{2} + 15r + 54$

factorising _____

$r {}^{2} + 9r + 6r + 54$

=

$(r {}^{2} + 9r) + (6r + 54)$

=

$r(r + 9) + 6(r + 9)$

=

$(r + 9)(r + 6)$

It took a large time to type in this way

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Answer 2

To factorise:-

• r²+15r+54

Solution:-

r²+15r+54

r²+9r+6r+54

r(r+9)+6(r+9)

(r+6)(r+9)

Correct answer:-

• (r+6)(r+9)