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Answers
Step-by-step explanation:
Solutions :-
1) See the above attachment
→ Draw a number line and mark zero in the middle of the line.
→ Write the positive rational numbers on the right side to the zero
→ Write the negative rational numbers on the left side to the zero
→ Round off the required numbers .
2)
Given that
(4x²-3x+7) - (x²+8x-5)
=> 4x²-3x+7-x²-8x+5
=> (4x²-x²) +(-3x-8x)+(7+5)
=> (4-1)x²+(-3-8)x+12
=> 3x²+(-11)x+12
=> 3x²-11x+12
(4x²-3x+7) - (x²+8x-5) = 3x²-11x+12
Note :-
When subtracting two polynomials,change the symbols of the each term in the second polynomial which is subtracted from the first polynomial.
Step-by-step explanation:
Numbers with a negative sign are less than zero
Right of zero represented by '+' sign and to the left of zero represented by '-' sign.
+ sign numbers can be denoted as simply numbers
On a number line the number increases as we move to the right and decreases as we move to the left.
1: Draw a line and mark some points at equal distance on it
Mark a point as zero on it. Points to the right of zero are positive integers and are marked simply 1, 2, 3 and so on, while points to the left of zero are negative integers and are marked -1, - 2, – 3 and so on
-4/3 = -1 -1/3
2. Divide number line between -1 & -2 in 3 Equal parts and go 1 part left of -1 to show -4/3 on number line
