Question

ini soal lengkap nya. bantuin jawab ya..

Answer 1

Segitiga siku siku sama kaki
misal AB = BC = a
maka AC = √(AB²+BC²) =  a√2

keliling = 8
AB+BC + AC  =  8
a+ a + a√2 = 8
2a + a√2 = 8
a(2+√2) = 8
a = 8 /(2+√2) ...rasionalkan

a = 8/(2+√2) X (2-√2)/(2 -√2)
a = 8 (2 - √2)/ (4-2)
a = 8/2 (2 - √2)
a = 4(2 - √2)
a = 8 - 4√2
jwab C

Answer 2

2x + √2x^2 = 8
2x + x√2 = 8
x (2 + √2 ) = 8
x = 8 / (2+√2) × (2-√2) / (2-√2)
x = ( 16 - 8√2 ) / 4-2
x = 8 - 4√2