Question

8cm
Solve the following sums :-
Simplify :- 3x2 + x(x+2) - 3x(2x+1)
Divide :- (m?n4 + mºnº- mºna) (-mºn-
Find the missing number :-
1.5, *, 13-5
Reduce the following Ratio :-​

Answer 1

Answer:

6+x-5{x}^{2}

Step-by-Step Explanation:

3x2 + x(x + 2) - 3x(2x + 1)

= 3x2 + x ^{2} + 2x - 6 {x}^{2} - 3x

= 6 + {x}^{2} + 2x - 6 {x}^{2} - 3x

= 6 + x - 5 {x}^{2}

Answer 2

Answer:

3x

2

−2x−1)(2x

2

+x−5)

=x

4

+3x

3

−15x

2

−4x

3

−2x

2

+10x−2x

2

−1+5

=6x

4

−x

3

−19x

2

+9x+5