Question

Simplify (5a+2b-3)² - (5a-2b+1)²

Answer 1

Answer:

25a-25a+4b-4b-9+1

Step-by-step explanation:

25a is cancel to -25a,4b is cancel to -4b,9 add 1 so answer is 10

Answer 2

Step-by-step explanation:

(5a+2b-3)^2-(5a-2b+1)^2

(5a+2b-3+5a-2b+1)(5a+2b-3-(5a-2b+1))

(10a+1)(5a+2b-3-5a+2b-1)

(10a+1)(4b-4)

40ab-8b-40a+80