Factorising the polynomial 5x³ + 35x² + 6x + 42, the value of A is 6.
Factorising a polynomial simply means to decompose the polynomial into a product of two or more polynomials.
Therefore, let's factorise 5x³ + 35x² + 6x + 42 and find the value of A
(5x² + A)(x + B)
Therefore,
5x³ + 35x² + 6x + 42
5x³ + 6x + 35x² + 42
x(5x² + 6) + 7(5x² + 6)
Therefore,
(5x² + 6)(x + 7)
Therefore, the value of A is 6
learn more on factorisation here; https://brainly.com/question/1415111
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