a = 4, b = -21, c = -18
to keep from getting "mixed up", evaluate the discriminant first ...
b<sup>2</sup> - 4ac = (-21)<sup>2</sup> - 4(4)(-18) = 729
sqrt(729) = 27
x = (21 +/- 27)/8
x = -3/4, x = 6
since the discriminant is a perfect square, the original quadratic will factor ...
4x<sup>2</sup> - 21x - 18 = 0
(4x + 3)(x - 6) = 0
x = -3/4, x = 6
The factors of 56 include
1 by 56
2 by 28
4 by 14
7 by 8
Answer:
j + 5 = s
a = l + 3
Step-by-step explanation:
Answer:
56m²
Step-by-step explanation:
14×4 = 56
Each side is the same length and there are 4
