Question

Упростите выражение:
(х+4)2 - (х + 2)(х + 8)​

Answer 1

Объяснение:

$(x + 4) {}^{2} - (x + 2)(x + 8) = x {}^{2} + 8x + 16 - (x {}^{2} + 8x + 2x + 16) = x {}^{2} + 8x + 16 - (x {}^{2} + 10x + 16) = x {}^{2} + 8x + 16 - x {}^{2} - 10 - 16 = 8x + 16 - 10x - 16 = 8x - 10x = - 2x$