Question

(2x+5y)^2-1 is equal to whatt????

Answer 1

(2x+5y)^2-1 is equal to 2x+5y

Becuase
(2x+5y) ^2-1 is 2x+5y^1

Answer 2

$4x {}^{2} + 25y {}^{2} + 20xy - 1$