5a + 7b = 32
Nilai (a + b)²
Ba menipis :v
2a + 3b = 13 ......(1)
5a + 7b = 32 ......(2)
Eliminasi a
2a + 3b = 13 |×5| 10a + 15b = 65
5a + 7b = 32 |×2| 10a + 14b = 64
____________ –
b = 1
Substitusi b ke pers
2a + 3b = 13
2a + 3(1) = 13
2a + 3 = 13
2a = 13 - 3
2a = 10
a = 10 ÷ 2
a = 5
Nilai (a + b)²
(a + b)²
= (5 + 1)²
= 6²
= 36
#LearnWithPanda
SOAL 1
___________________________________________
Cari Dulu Nilai a Atau b :
2a + 3b = 13 | × 5 |
5a + 7b = 32 | × 2 |
___________________________________________ 10a + 15b = 65
10a + 14b = 64
___________ -
b = 1
___________________________________________ Subtitusikan Nilai b :
2a + 3(1) = 13
2a + 3 = 13
2a = 13 - 3
2a = 10
a = 10 ÷ 2
a = 5
___________________________________________ (a + b)²
= (5 + 1)²
= (6)²
= 6²
= 36
___________________________________________ [tex] {\mathcal\color{purple}{{\pink{\underline{\purple{\underline\bold{\pink{K}\bold\color{violet}{h\bold{\pink{a}\bold\color{violet}{d\bold{\pink{i}\bold\color{violet}{j\bold{\pink{a}\bold\color{violet}{h\bold{\pink{A}\bold\color{violet}{m\bold{\pink{j}\bold\color{violet}{a\bold{\pink{d}\bold\color{violet}{1\bold{\pink{2}}}}}}}}}}}}}}}}}}}}}}[/tex]
[answer.2.content]
