(2z +5y)^4

[danilobr87]

Find the product
(2z +5y)^4

=(2^4)(z^4) + (5^4)(y^4)

=10^8 z^4 y^4

is this correct or am I confusing it :?

 

[Loren]

Not correct. (a+b)[sup:3tgs7io5]2[/sup:3tgs7io5] = a[sup:3tgs7io5]2[/sup:3tgs7io5]+2ab+b[sup:3tgs7io5]2[/sup:3tgs7io5]

(a+b)[sup:3tgs7io5]4[/sup:3tgs7io5] = (a[sup:3tgs7io5]2[/sup:3tgs7io5]+2ab+b[sup:3tgs7io5]2[/sup:3tgs7io5])(a[sup:3tgs7io5]2[/sup:3tgs7io5]+2ab+b[sup:3tgs7io5]2[/sup:3tgs7io5]) = ???

 

[Aladdin]

Expand right ??
(a + b)? = (1)a? + (4)a³b¹ + (6)a²b² + (4)a¹b³ + (1)ab?

 

[Deleted member 4993]

Expand right ??
(a + b)? = (1)a? + (4)a³b¹ + (6)a²b² + (4)a¹b³ + (1)ab? .....Incorrect

(a + b)? = a? + 4a³b + 6a²b² + 4ab³ + b?

 

[Aladdin]

Expand right ??
(a + b)? = (1)a? + (4)a³b¹ + (6)a²b² + (4)a¹b³ + (1)ab? .....Incorrect

(a + b)? = a? + 4a³b + 6a²b² + 4ab³ + b?

True

 

[Denis]

Find the product
(2z +5y)^4

Dani, can you post the original problem IN FULL? Use of word "product" is sort of iffy here!
What grade are you in?