Question

find the errors and correct the following mathematical sentences

Answer 1

1.   3(x-9)=3x-27

2.   x(3x+2)=3x^2+2x

3.   2x+3x=5x

4.   2x+x+3x=6x

5.   4p+3p+2p+p-9p=p

6.   3x+2y=3x+2y

7.   (3x)^2+4x+7=9x^2+4x+7

8.   (2x)^2+5x=4x^2+5x

9.   (2a+3)^2=4a^2+6a+9

10.a. 0
 b.    30
c.     12
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