Add and subtract the following fractions. Remember to find the LCD first.

Mathematics

1 answer:

Sever21 [200]2 years ago

4 0

11. 345,000

12. 128,000

13. 42.5

14. 39.6

15. $365.47; $365

16. $125.65; $126

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Solve 12^x^2+5x-4 = 12^2x+6

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The solutions for ‘x’ are 2 and -5

<u>Step-by-step explanation:</u>

Given equation:

$12^{x^{2}+5 x-4}=12^{2 x+6}$

Since the base on both sides as ‘12’ are the same, we can write it as

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$x^{2}+3 x-10=0$

Often, the value of x is easiest to solve by $a x^{2}+b x+c=0$ by factoring a square factor, setting each factor to zero, and then isolating each factor. Whereas sometimes the equation is too awkward or doesn't matter at all, or you just don't feel like factoring.