Question

9x² + 7x-2 factorise​

Answer 1

Answer:

Answer 0. correct Nothing to worry

Answer 2

Answer:

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Step-by-step explanation:

Step-1 : Multiply the coefficient of the first term by the constant

Step-2 : Find two factors of  -18  whose sum equals the coefficient of the middle term, which is  7 .

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, 9  and  -2

9x^2 + 9x - 2x - 2

Step-4 : Add up the first 2 terms, pulling out like factors :  9x * (x+1)

Add up the last 2 terms, pulling out common factors :   -2 * (x+1)

Step-5 : Add up the four terms of step 4 :  (9x-2) * (x+1)

which is the desired factorization