Trinomial Factoring

15 questions. 3 minutes.
1
2x²+17x+21 =
(2x + )(x + )
2
3x²+5x+2 =
(3x + )(x + )
3
2x²-21x+49 =
(2x + )(x + )
4
2x²+7x+3 =
(2x + )(x + )
5
3x²-20x+32 =
(3x + )(x + )
6
3x²+28x+49 =
(3x + )(x + )
7
x²-7x+10 =
(x + )(x + )
8
3x²+32x+64 =
(3x + )(x + )
9
3x²+2x-8 =
(3x + )(x + )
10
3x²+7x-40 =
(3x + )(x + )
11
2x²-11x+9 =
(2x + )(x + )
12
2x²+17x-9 =
(2x + )(x + )
13
3x²+x-2 =
(3x + )(x + )
14
x²-4x+3 =
(x + )(x + )
15
2x²+13x+21 =
(2x + )(x + )