Question

ANSWER THESE QUESTIONS IN ATTACHMENT

Answer 1

minus X minus = plus

(-5)⁴ = -5 X -5 X -5 X -5 =  (+25) X (+25) = 625
(-6)² = -6 X -6 = (+36) 
(-1)² =  -1 X -1 = 1

now multiply


plus X minus = minus
-3 X -4 X -2 = +12 X -2 =   - 24
now:   (-24)² = -24 X -24 = 576

i)  24 - 25 +12 - 15 = -1 + 12 - 15 =  +11 -15 = -4
   -25 - (15) = -25 -15 = -40
     4 - 5 = -1
answer:  -12 X -4 X -40  X -1
              =  +48  X  +40   =  1, 920

ii)  9 - { 6 + 30 ÷ 10 - 5 }
     =   9 - { 6 + 3 - 5 }  = 9  - 4 =  5
       so answer    3 X 4 - [ 5] = 7

iii)  3  4/5 = 19/5          4  5/6 =  29/6

$\frac{19}{5}-\frac{29}{6}=\frac{19X6-5X29}{5X6}=\frac{-31}{30}\\\\\frac{19}{5}+\frac{29}{6}=\frac{19X6+5X29}{5X6}=\frac{259}{30}\\\\answer= \frac{-31}{30} \div \frac{259}{30} \div \frac{31}{259}\\\\=\frac{259}{30}\\\\answer= \frac{-31}{30} X \frac{30}{259} \div \frac{31}{259}\\\\=\frac{-31}{259} \times \frac{259}{31}\\\\=-1$