if A=3x^2-7x-8.,B=x^2+8x-3and C=-5x^2-3x+2,find i) A-B-C ii)A-B+C
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3
As A,B,C have same degree
so directly substitute,
i) A-B-C
=3x^2-7x-8 -x^2-8x+3 +5x^2+3x-2
=7x^2-12x-7
ii) A+B+C
= 3x^2-7x-8+x^2+8x-3-5x^2-3x+2
= -x^2-2x-9
eniazemi:
A-B+C *
its ok
the question ii was A-B+C NOT A+B+C
now u must try the correct one
Answered by
0
Answer:
i) 7x^2-12x-7
ii) -3x^2-18x-3= -3(x^2+6x+1)
Step-by-step explanation:
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