Question

4) hay giup huy khoi phuc lai nhung dang thuc bi muc lam nhoe di vai cho :

a) x²+6xy+......=(......+ 3x)² b) (......-......)²=a²-....

c) (....+.....)²=.....+m+1phan 4 d) ......-4n⁴=(m+.....)(m-....)

Answer 1

x^2+6xy+9x^2=(x+3x)^2

b) (a-b)^2=a^2-2ab+b^2

c)(m+1/2)^2=m^2+m+1/4

Answer 2

a) \(x^2+6xy+9x^2=\left(x+3x\right)^2\)

b) \(\left(a-b\right)^2=a^2-2ab-b^2\)

c) \(\left(m+1\right)^2=m^2+2m+1\)

d) \(m^2-4n^4=\left(m+2n\right)\left(m-2n\right)\)

Answer 3

d)m^2-4x^4=(m+2n^2)(m-2n^2)