3 years ago

What are the zeros of the quadratic function f(x)=2x^2+8x-3

Mathematics

1 answer:

Nezavi [6.7K]3 years ago

8 0

Answer:

-2 +/- [(sqrt 88)/ 4]

0.35, -4.35 to the nearest hundredth.

Step-by-step explanation:

2x^2 + 8x - 3 = 0

Using the quadratic formula:

x = [ -8 +/- sqrt (8^2 - 4*2*-3) ] / 4

= -2 +/- (sqrt 88)/ 4

You might be interested in

Simplify 2(a+5)−3(5a−4)

Nutka1998 [239]

Answer:

$-13a+22$

Step-by-step explanation:

we have

$2(a+5)-3(5a-4)$

step 1

Apply the distributive property both terms

$2a+2(5)-3(5a)+3(4)$

$2a+10-15a+12$

step 2

Combine like terms

$(2a-15a)+(10+12)$

$(-13a)+(22)$

$-13a+22$

4 0

3 years ago

Factor completely. 8y^2 - 26y + 15 (4y - 3)(2y - 5) (2y - 3)(4y - 5) 2(2y - 3)(2y - 5)

Zarrin [17]

8y^2 - 26y + 15

= (4y - 3)(2y - 5)

Hope it helps.

7 0

3 years ago

Read 2 more answers

Cam someone help me out please

Sergio039 [100]

Answer:428.67

Step-by-step explanation:

πr (r+square root(h2+r2) plug in the numbers

5 0

3 years ago

What is two less than 3 times a number is the same as the number plus 10.

d1i1m1o1n [39]

2 less than (3 times a number) is the same as (the number plus 10)
2 less than (3*x) = (x + 10)
3x - 2 = x + 10
From here, you solve! :)

3x - 2 - x = x + 10 - x
2x - 2 = 10
2x - 2 + 2 = 10 + 2
2x = 12
2x / 2 = 12 / 2
x = 6

Hope this helps! :)

6 0

4 years ago

Please help me find the value of this angle?

yawa3891 [41]

I'm pretty sure it would have to be 155. Considering a flat line has an angle of 180 and if you subtract 180 from 25 you get 155.

7 0

3 years ago