Jawaban:
1. 16
2. -22
3. 0
Penjelasan dengan langkah-langkah:
1.
2x+5y
= 2(-2)+5(4)
= -4+20
= 16
2.
3x-4y
= 3(-2)-4(4)
= -6-16
= -22
x²-y
= (-2)²-4
= 4-4
= 0
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Jawaban:
1. 16
2. -22
3. 0
Penjelasan dengan langkah-langkah:
1.
2x+5y
= 2(-2)+5(4)
= -4+20
= 16
2.
3x-4y
= 3(-2)-4(4)
= -6-16
= -22
x²-y
= (-2)²-4
= 4-4
= 0