Resposta:
A)▲= 12²-4×2×18
▲= 144-4×2×18
▲= 144-8×18
▲= 144-144
▲=0
B) ▲=(-4)²-4×1×9
▲= 16-4×1×9
▲=16-36
▲=-20
C) ▲=(-20)²-4×25×4
▲=400-4×25×4
▲=400-100×4
▲=400-400
D)▲=2²-4×1×(-15)
▲=4-4×(-15)
▲=4+60
▲=64
E) ▲=3²-4×1×2
▲=9-4×2
▲=9-8
▲=1
F) ▲=1²-4×1×(-12)
▲=1-4×1×(-12)
▲=1-4×(-12)
▲=1+48
▲=49
G) ▲=(-2)²-4×1×1
▲=4-4×1×1
▲=4-4
H) ▲=6²-4×1×(-9)
▲=36-4×1×(-9)
▲=36-4×(-9)
▲=36+36
▲=72
I) ▲=(-4)²-4×1×(-5)
▲=16-4×1×(-5)
▲=16-4×(-5)
▲=16+20
▲=36
J) ▲=1²-4×(-1)×12
▲=1-4×(-1)×12
▲=1+4×12
K) ▲=6³-4×(-1)×(-5)
▲=36-4×(-1)×(-5)
▲=36+4×(-5)
▲=36-20
▲=16
L) ▲=1²-4×6×(-1)
▲=1-4×6×(-1)
▲=1-24×(-1)
▲=1+24
▲=25
M) ▲=(-7)²-4×3×2
▲=49-4×3×2
▲=49-12×2
▲=49-24
Explicação passo-a-passo:
▲=b² -4×a×c
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Verified answer
Resposta:
A)▲= 12²-4×2×18
▲= 144-4×2×18
▲= 144-8×18
▲= 144-144
▲=0
B) ▲=(-4)²-4×1×9
▲= 16-4×1×9
▲=16-36
▲=-20
C) ▲=(-20)²-4×25×4
▲=400-4×25×4
▲=400-100×4
▲=400-400
▲=0
D)▲=2²-4×1×(-15)
▲=4-4×(-15)
▲=4+60
▲=64
E) ▲=3²-4×1×2
▲=9-4×2
▲=9-8
▲=1
F) ▲=1²-4×1×(-12)
▲=1-4×1×(-12)
▲=1-4×(-12)
▲=1+48
▲=49
G) ▲=(-2)²-4×1×1
▲=4-4×1×1
▲=4-4
▲=0
H) ▲=6²-4×1×(-9)
▲=36-4×1×(-9)
▲=36-4×(-9)
▲=36+36
▲=72
I) ▲=(-4)²-4×1×(-5)
▲=16-4×1×(-5)
▲=16-4×(-5)
▲=16+20
▲=36
J) ▲=1²-4×(-1)×12
▲=1-4×(-1)×12
▲=1+4×12
▲=1+48
▲=49
K) ▲=6³-4×(-1)×(-5)
▲=36-4×(-1)×(-5)
▲=36+4×(-5)
▲=36-20
▲=16
L) ▲=1²-4×6×(-1)
▲=1-4×6×(-1)
▲=1-24×(-1)
▲=1+24
▲=25
M) ▲=(-7)²-4×3×2
▲=49-4×3×2
▲=49-12×2
▲=49-24
▲=25
Explicação passo-a-passo:
▲=b² -4×a×c