2 years ago

I need help solving this please

2 answers:

7 0

I believe the answer would be 9

juin [17]2 years ago

4 0

9 ft long for the side of x

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Masja [62]

The answer to -3-8+(-4) is -15

7 0

2 years ago

ohaa [14]

Too

Thanks

Hahahah

16263636

6 0

2 years ago

lapo4ka [179]

Divide both sides by -3, and replace $x^2$ with $y$ . Then

$-3x^4+27x^2+1200=0\iff y^2-9y-400=0$

Factorize the quadratic in $y$ to get

$y^2-9y-400=(y+16)(y-25)=0\implies y=-16,y=25$

which in turn means

$x^2=-16,x^2=25$

But $x^2\ge0$ for all real $x$ , so we can ignore the first solution. This leaves us with

$x^2=25\implies x=\pm\sqrt{25}=\pm5$

If we allow for any complex solution, then we can continue with the solution we ignored:

$x^2=-16\implies x=\pm\sqrt{-16}=\pm i\sqrt{16}=\pm4i$

6 0

3 years ago

11Alexandr11 [23.1K]

729. You just do 9 to the power of 3 or 9^3 and you will get 729. If it is not allowed, the answer is 504.(9 x 8 x 7)

8 0

2 years ago

juin [17]

Idk hi what’s up with y’all and josh

7 0

2 years ago