3*3^2+2*10^2-15=212
The answer is 212
The answer is
the first one is x= 18.98
a^2+b^2=c^2
8 cm^2+17 cm^2= x^2
64+289=x^2
√x^2= √353
x=18.89
<span><span>the second one is x= 18.7
a^2+b^2=c^2
7 m^2+ x^2= 20 m^2
49 m+x^2=400 m
-49 -49
</span></span>√x^2=√352
<span><span>x= 18.7
Hope this helps!</span></span>
Answer:
Step-by-step explanation:
it’s ask a freind
Answer:
D
Step-by-step explanation:
x=(-4(plus minus)sqrt(4^2-4*2*(-1))/2*2
x=(-4(plus minus)sqrt(16+8))/4
x=(-4(plus minus)sqrt(24))/4
x=(-4(plus minus)sqrt(2*2*6))/4
x=(-4(plus minus)2*sqrt(6))/4
x=(2(-2(plus minus)*sqrt(6)))/2*2
x=(-2(plus minus)*sqrt(6))/2
x=(-2+sqrt(6))/2
x=(-2-sqrt(6))/2
(Option 4 I think, but can see for sure)
