Question

решите уравнение (х+5)² - (х-1)² = 48​

Answer 1

(х+5)² - (х-1)² = 48

x²+10x+25-(x²-2x+1)=48

x²+10x+25-x²+2x-1=48

12x+24=48

12x=48-24

12x=24

x=2