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Fast Math - Random Quadratic Equations

Can you solve these random quadratic equations? The equations change every time!
Enter the two solutions in either order.
Answer must correspond to highlighted box!
All solutions are integers.
If this is too fast, you can always try the 15 Minute Version so you're not time pressured.
Quiz by Stewart
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Last updated: September 26, 2019
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First submittedSeptember 26, 2019
Times taken1,616
Average score80.0%
Rating5.00
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Equation
Solutions
x² - 3x - 10
-2 and 5
x² - 14x + 40
4 and 10
x² - 9x + 18
3 and 6
x² + 10x + 25
-5 and -5
x² - x - 30
-5 and 6
Equation
Solutions
x² + 19x + 84
-7 and -12
x² - 9x - 90
-6 and 15
x² - 7x + 6
1 and 6
x² - 2x - 24
-4 and 6
x² - 15x + 54
6 and 9
Equation
Solutions
x² - 4x - 12
-2 and 6
x² + 4x + 4
-2 and -2
x² + 12x + 20
-2 and -10
x² - 6x + 9
3 and 3
x² + 20x + 75
-5 and -15
6 Comments
+2
Level 78
Sep 27, 2019
nice, I enjoyed that!
+4
Level 51
Dec 7, 2020
Really nice idea!

But pay attention to the signs, they're wrong more often than not.

+4
Level 78
Oct 10, 2021
it's a shame there's no way to require the taker to get the right signs - typing positive integers always gives it to you. oh well, fun quiz nonetheless, challenging to do under time pressure but not complaining
+1
Level 50
Mar 13, 2022
It's easy once you know how to factorize
+1
Level 48
Mar 16, 2024
agree. but doing quad. equations in one's head is an interesting exercise
+1
Level 63
Apr 21, 2022
Good job! Too bad signs don't work.
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