Question

6. Calculaţi:

a) 144:(-12)+7×(-2)³ +2 010;
b) (-88):(-4)-125:(-5)² - 380;
c) {6-[282×(-1)-(44:11-18)]}-644;
d) 25²:(-5)² - {42+3×[6-(3³×5+11)]}.

va rog cu detalii!​

Answer 1

a) 144:(-12)+7×(-2)³ +2 010= 12+7×(-8)+2010 = 12+56+2010= 2078

b) (-88):(-4)-125:(-5)² - 380= 22-5-380= 405

c) {6-[282×(-1)-(44:11-18)]}-644={6-[-282-(4-18)]-644=[6-(-282-14)]-644=(6-296)-644=290-644=-354

d) 25²:(-5)² - {42+3×[6-(3³×5+11)]}=625+25-{42+3×[6-(27×5+11)]}=625+25-{42+3×[6-(135+11)]}=625+25-[42+3×(6-146)]=625+25-(42+3×140)=625+25-(42+420)=625+25-442=650-442=288