$x^2+9x+14=0\\\\ x_{1}=\frac{-b-\sqrt{b^2-4ac} }{2a}=\frac{-9-\sqrt{9^2-4*1*14 } }{2 }=\frac{-9-\sqrt{81-56 } }{2 }= \frac{-9-\sqrt{25 } }{2 }=\\\\=\frac{-9-5 }{2 }=\frac{-14 }{2 }= -7\\\\ x_{2}=\frac{-b+\sqrt{b^2-4ac} }{2a}=\frac{-9+\sqrt{9^2-4*1*14 } }{2 }= \frac{-9+5 }{2 }=\frac{- 4 }{2 }= -2$

5 0

2 years ago

Complete the following multiplication problems. a. 0.34 × 6 b. 0.11 × 4 c. 17 × 0.07 d. 28 × 0.003 e. 3.8 × 5 f. 5.931 × 7 g. 14

kvasek [131]

A. 2.04
b .44
c.1.19
d .084
e. 19
f. 41.517
g.182.91
h. 96.16
i. .24
j. .0225
k. .0018
l. .00592
m.2.07
n. 2.175
o. .01359
p. 3.00552
q. 4.07
r. 71.064
s. 27.877
t. 35.7124

3 0

2 years ago

Read 2 more answers

The difference of the square of a number and the number is 210. Find the number.

Alinara [238K]

A graphing calculator can help find the number(s) that meet this requirement.

The number could be 15, or -14.

8 0

2 years ago