Help Me with two math questions?

label Algebra
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1.     Multiply and simplify.

a) (b + 2)(b + 2)

b) (x + 3)(x – 3)

Answer:


1.     Simplify.

a) (3xy3)(2x3y)

b) 2y(2y + 3y2) – y2(3 – y)

May 11th, 2015

Feel free to ask any doubts.

Good Luck

May 11th, 2015

can you type it.....it's hard to read ur hand writng

May 11th, 2015

all right, a few minutes

May 11th, 2015

(a)   (b+2)(b+2)

= b(b+2) + 2(b+2)

=b2 + 4b + 4                              (answer)

(b)   (x+3)(x-3)

= x(x-3)  +  3(x-3)

=  x2 – 3x + 3x -9

=  x2 – 9                                   (answer)


(a)   (3xy3)(2x3y)

        =  (3*2)(x.x3)(y3.y)

         =  6x4y4                                               

 

(b)  2y(2y + 3y2) – y2(3-y)

       =  4y2 + 6y3 – 3y2 + y3

        =  4y2 – 3y2 + 6y3 + y3

         =  y2 + 7y3


May 11th, 2015

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