Answer:
(x-5)(2x+3)
Step-by-step explanation:
2x²-7x-15 = 2x²-10x+3x-15 = 2x(x-5)+3(x-5) = (x-5)(2x+3)
Answer:
(x - 5)(2x + 3)
Step-by-step explanation:
To factorise the quadratic
Consider the factors of the product of the x² term and the constant term which sum to give the coefficient of the x- term
product = 2 × - 15 = - 30 and sum = - 7
The factors are - 10 and + 3
Use these factors to split the x- term
2x² - 10x + 3x - 15 ( factor the first/second and third/fourth terms )
= 2x(x - 5) + 3(x - 5) ← factor out (x - 5) from each term
= (x - 5)(2x + 3)
