Question

solve using identities (3xsquare y + 7) (3x square y +11) best ans will be maked brainliest

Answer 1

Answer:

9x^4y^2+54x^2y+77

Step-by-step explanation:

According to your question, I suppose the equation is read as follows:

(3x^2y+7)(3x^2y+11)

[Using the identity (x+a)(x+b)=x^2+(a+b)x+ab] we have,

=(3x^2y)^2+(7+11)3x^2y+(7*11)

[Here I have taken, x=3x^2y, a=7 and b=11}

=9x^4y^2+54x^2y+77

[(3x^2y)^2=9x^4y^2

(7+11)3x^2y=54x^2y

(7*11)=77]

Please let me know if the equation that I have assumed is wrong