Question

(а-б) (а+б)
(х-у) (х+у)
(5-4с)(5+4с)
(12у+10м)(12у-10м)
(1/6х+3с)(1/6х-3с)
(1/7+у)(1/7-у)

Answer 1

a^2-b^2

x^2-y^2

25-16c^2

144y^2-100m^2

1/36 ×^2-9c^2

1/49-y^2