Question

(x-5)(x+5)-x(x+3) < x+1
Решите неравенство.

Answer 1

(x-5)(x+5)-x(x+3)<x+1,
х²-25-х²-3х<х+1,
-25-3х<х+1,
-3х-х<1+25,
-4х<26,
х>-6,5