Hello. I am Stuck. All help is appreciated. Question: Expand - (5x^2-6y^2)^2 . Many Thanks.

Question

compassionate · Answer

- (5x^2-6y^2)^2 
- ( 5 x ^2 -6 y^2 ) ^2 
-     (    5    x^2    -6    y^2    )    ^2 
-          (        5       x^2        -6          y^2          )^2

compassionate · Answer

But, is the "-" in front a negative sign, or is that just a comma?

sidsiddhartha · Answer

lol

sidsiddhartha · Answer

i think hshould use (a-b)^2=a^2-2ab+b^2

anonymous · Answer

( five x squared minus six y squared ) squared

sidsiddhartha · Answer

*it will be (5x^2-6y^2)^2

sidsiddhartha · Answer

$$(5x^2-6y^2)^2=(5x^2)^2-2.5x^2.6y^2+(6y)^2$$

anonymous · Answer

$$where does the -2.5x^{2} come from$$

sidsiddhartha · Answer

$$used\(a-b)^2=a^2-2.a.b+b^2$$

sidsiddhartha · Answer

here (.) means multiplication

sidsiddhartha · Answer

so finally$$(5x^2-6y^2)=25x^4-60x^2y^2+36y^2$$

anonymous · Answer

why dosen't Y get a 4 as an exponent ?

sidsiddhartha · Answer

yeah my bad it will get a 4 exponent :)

anonymous · Answer

Thank you so much. How do I give you a medal?

sidsiddhartha · Answer

just click "best response" button  :)

anonymous · Answer

I got it. Thanks again. I need to practice more.

sidsiddhartha · Answer

yw!!and good luck :)