Question

factorise
4x² - 17x + 15​

Answer 1

4×15=60

-5×-12=60

expression = 4x^2 - 5x -12x +15

=x (4x-5) -3 (4x-5)

=(x-3)(4x-5)

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Answer 2

Step-by-step explanation:

${4x}^{2} - 12x - 5x + 15 \\ 4x(x - 3) - 5(x - 3) \\ (4x - 5)(x - 3) \\ x = \frac{5}{4} \\ x = 3$