Question

Use factorisation to find answer

Answer 1

Answer:

Step-by-step explanation:

Ax +bx-c=0

Answer 2

Step-by-step explanation:

$3a {}^{2} + 39a + 9a + 117$

$3a(a + 13) + 9(a + 13)$

$(a + 13)(3a + 9)$

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