Question

(b-3)(b-5)
please tell me the answer and step by steps also as it is an assignment ​

Answer 1

Answer:

b2-8b-15

Explanation:

(b-3)(b-5)

b(b-3)-5(b-3)multiply by one part

b2-8b-15

Hopeful that it may be understood by you!!

Answer 2

Answer:

Math identities

Explanation:

 (b-3)(b-5)                                                                           [identity:(x-a)(x-b)]

= b^2 -5x -3x + (-3*-5)                                             [(x-a)(x-b) = x^2 -x(a+b) + ab]  =b^2 -x(3+5) + 15

=b^2 -8x + 15

you  can further solve this an quadratic equation: the process will go reverse and u will again get  (b-3)(b-5):

hence, b=3 and b=5

hope this helps:)