Question

7x(-3) x (-2)^2 help please!

Answer 1

Answer:

7\times (-3) \times  (-2)^2=-21\times 4=-84

Step-by-step explanation:

Multiplication :

Multiplication means to add equal groups or we can say multiplication is repeated addition . We use symbol × to denote multiplication .

Consider a bag containing 5 balls then 7 bags will contain $5+5+5+5+5+5+5=7+7+7+7+7=35$ balls or we can directy say that 5 bags will contain 5×7 = 35 balls .

If we are saying 6 times 8, it means 8+8+8+8+8+8 = 6+6+6+6+6+6+6+6 .

i.e 8 is added 6 times or 6 is added 8 times .

In problem 7×9 = 63 , 7 and 9 are factors and 63 is the product .

To find : $7\times (-3) \times (-2)^2$

Solving $7\times (-3) :$

$7\times (-3)=(-3) +(-3)+(-3)+(-3)+(-3)+(-3)+(-3)=-21$

Solving $(-2)^2 :$

$(-2)^2=(-2)\times (-2)=4$

Therefore ,

$7\times (-3) \times (-2)^2=-21\times 4=-84$

Answer 2

    [7×(-3)]   ×   (-2)²
=     (-21)    ×    4
=             -84