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jabarkan
=(4)2+2.3√2.4+(3√2)2-4.(16-3√2.3√2)+4.2-3√2.2
=16 +24√2 +9.2 - 4.(16-18)+8-6√2
=16 + 24√2 +18-4(-2) + 8 -6√2
=16 + 24√2 + 18 +8+8 -6√2
=40+18√2
=20+9√2
ini cara aku.. cek dulu ya jwabnyya