Penjelasan dengan langkah-langkah:
Ket.
- sifat aljabar
a = (a + b)(a - b)
b = (a² + ab) + (ab - b²)
c = a² + b²
----
= ( 10 + 12 )( 10 - 12 )
= 22( -2 )
= 22 × ( -2 )
= -44
__________
ALJABAR
10² + 12² = (10+12)² – 2×10×12
10² + 12² = 22² – 240
10² + 12² = 22² – (4√15)²
100 + 144 = (22 + 4√15)(22 – 4√15)
244 = (22² + 88√15) + (–88√15 – (4√15)²)
244 = 22² + 88√15 –88√15 – (√240)²
244 = 484 + 0 – 240
244 = 484 – 240 ✔
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Penjelasan dengan langkah-langkah:
Ket.
- sifat aljabar
a = (a + b)(a - b)
b = (a² + ab) + (ab - b²)
c = a² + b²
----
= ( 10 + 12 )( 10 - 12 )
= 22( -2 )
= 22 × ( -2 )
= -44
__________
Penjelasan dengan langkah-langkah:
ALJABAR
10² + 12² = (10+12)² – 2×10×12
10² + 12² = 22² – 240
10² + 12² = 22² – (4√15)²
100 + 144 = (22 + 4√15)(22 – 4√15)
244 = (22² + 88√15) + (–88√15 – (4√15)²)
244 = 22² + 88√15 –88√15 – (√240)²
244 = 484 + 0 – 240
244 = 484 – 240 ✔