Question

If 25x² - y² = (5x + ½) (5x - ½) find y?​

Answer 1

Answer:

(5x+1/2)(5x-1/2)

=(5x)^2-(1/2)^2

=25x^2-1/4

so ,

y^2=1/4

y=1/2, -1/2

Answer 2

Answer:

49a

Step-by-step explanation:$Answer5 x+1 =25 x−2 ⇒5 x+1 =(5 2 ) x−2 ⇒5 x+1 =5 2x−4 [If bases are equal, powers are also equal]⇒x+1=2x−4⇒2x−x=4+1⇒x=5∴3 x−3 ×2 3−x =3 5−3 ×2 3−5 =3 2 ×2 −2 =9× 41​ = 49​$