Question

(a+5b)*(7a-b) please explain me the answer how to do ​

Answer 1

Answer:

Simplifying

(a +5b)(7a - b) = 0

Multiply (2a + -5b) * (7a + b)

(2a * (7a + b) + -5b * (7a + b)) = 0

((7a * 2a + b * 2a) + -5b * (7a + b)) = 0

Reorder the terms:

((2ab + 14a2) + -5b * (7a + b)) = 0

((2ab + 14a2) + -5b * (7a + b)) = 0

(2ab + 14a2 + (7a * -5b + b * -5b)) = 0

(2ab + 14a2 + (-35ab + -5b2)) = 0

Reorder the terms:

(2ab + -35ab + 14a2 + -5b2) = 0

Combine like terms: 2ab + -35ab = -33ab

(-33ab + 14a2 + -5b2) = 0

Solving

-33ab + 14a2 + -5b2 = 0

Solving for variable 'a'.

Factor a trinomial.

(2a + -5b)(7a + b) = 0