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maxonik [38]
3 years ago
13

If m∠XWY = 20°, m∠XWZ = 40°, and XY = 16, what is the value of YZ?

Mathematics
1 answer:
Jobisdone [24]3 years ago
7 0
YZ = 16. The triangles are congruent. This would be AAS so YZ = 16 because of CPCTC.
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Hello,

P(x)=x^4-6x²+2=(x-a)(x-b)(x-c)(x-d)
=x^4-(a+b+c+d)x^3+(ab+ac+ad+bc+bd+cd)x^2-(abc+abd+acd+bcd)x+abcd

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if a is a root P(a)=0==>a^4-6a²+2=0
if b is a root P(b)=0==>b^4-6b²+2=0
if c is a root P(a)=0==>c^4-6c²+2=0
if d is a root P(a)=0==>d^4-6d²+2=0

==>a^4+b^4+c^4+d^4-6(a²+b²+c²+d²)+4*2=0
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