Question

What is formulae for (x+y)^4​

Answer 1

Answer:

(a+b)4

=(a+b)^2 × (a+b)^2

=(a2+2ab+b2) (a2+2ab+b2)

=(a^4+2a^3b+a^2b^2)+(2a^3b+4a^2b^2+2ab^3)+(a^2b^2+2ab^3+b^4)

=(a^4+4a^3b+6a^2b^2+4ab^3+b^4)

hope it helps you

Answer 2

Answer:

Mark me as brainliest

Step-by-step explanation:

Here is your answer-

${(x + y)}^{4} could \: be \: written \: as \: = \\ \\ {(x}^{2} + {y}^{2})^{2} \\ = identity \: = \: {a + b}^{2} = {a}^{2} + 2ab \: + {b}^{2} \\ \\ {x}^{2}^{2} + 2 {x}^{2} \times {y}^{2} + {y}^{2}^{2} \\ \\ = {x}^{4} + 2 {a}^{2} {b}^{2} + {y}^{4}$