l.49-x^2=(7-x)(7+x) ll.3x^2-10x+3=(3x+1)(x+3) lll.2x^2+2x-12=(2x+4)(x-3) lv.x^2+2x-15
Matematika
lubisniko
Pertanyaan
l.49-x^2=(7-x)(7+x) ll.3x^2-10x+3=(3x+1)(x+3) lll.2x^2+2x-12=(2x+4)(x-3) lv.x^2+2x-15
1 Jawaban
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1. Jawaban Nooer
I. 49-x² = (7-x)(7+x) => benar
II. 3x²-10x+3 = (3x+1)(x+3) => salah
Seharusnya => (3x-1)(x-3)
III. 2x²+2x-12 = (2x+4)(x-3) => salah
Seharusnya => (2x+6)(x-2)
IV. x²+2x-15 = (x-3)(x+5) => benar