Question

factorise x2-30x+216
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Answer 1

$\huge\bf { \red S \green O \pink L \blue U \orange T \purple I \red O \pink N \green{...}}$

★ By splitting middle term

$: \implies \sf {x}^{2} - 30x + 216 \\ \\ : \implies \sf {x}^{2} - 18x - 12x + 216 \\ \\: \implies \sf x(x - 18) - 12(x - 18) \\ \\: \implies \boxed{\sf (x - 12)(x - 18)}$

Answer 2

Answer:

x^2- 30x + 216

=> x^2 - 18x - 12x + 216

=> x(x -18) - 12(x - 18)

=> (x - 12) (x - 18)

Hope it helps.