Answer:The problem asks to factor the quadratic trinomialb²+86+7 step by step:> hope helpsTo factor this trinomial, we need to find two numbers that add up to 8 (the coefficient of the middle term) and multiply to 7 (the constant term). These numbers are 1 and 7. Therefore, we can factor the trinomial as follows:(b+1)(b+7)The factored form of the quadratic trinomialb2+8b+7 is (b+1)(b+7)