(a + 5) (a - 5) = a2 - 25
a2 + 7a - 8a2 = 6a7 ∴ a2 + 7a - 8a2- 6a7 = 0 ∴ a + 7 - 8a - 6a6 = 0 ∴ 7 - 7a - 6a6 = 0 ∴ 6a6 + 7a - 7 = 0
a2 - 4a + 4
5a+3a2a2= 8a a2
l a2 b2 is c2!!Its completely norma
Cannot be simplified
sqrt(a2 + b2) can't be simplified. Neither can (a2 + b2) .
(a^2+7a-8)/(a^2+6a-7) (original equation) (a+8)(a-1)/(a+7)(a-1) (simplify top and bottom) (a+8)/(a+7) <--answer
(a + 5) (a - 5) = a2 - 25
a2 + 7a - 8a2 = 6a7 ∴ a2 + 7a - 8a2- 6a7 = 0 ∴ a + 7 - 8a - 6a6 = 0 ∴ 7 - 7a - 6a6 = 0 ∴ 6a6 + 7a - 7 = 0
( a2 ) ( a2+1 )
(a2 + a + a2) = (2a2 + a) = a (2a + 1)
a2 - 4a + 4
a2 + -5a2 - a2 - a = a2 - 5a2 - a2 - a = a2 - 6a2 - a = -5a2 - a
a2 + a2 = 2a2
15
a(a + 2) = a2 + 2a