Question

Q. FILL THE BLANKS :

1) (x - y)(x + y) + (y - z)(y + z) + (z +x)(z - x) =

2) Standard form of 0.00001275 = ------

3) The quantity that a container holds is said to be

4) If with the decrease in one of the quantities, the other quantity also decreases , than the two quantities
are in proportion. ​

Answer 1

${\huge{\star{\underbrace{\tt{\red{Answer}}}}}}{\huge{\star}}$

1. (x²-y²)+(y²-z²)+(z²-x²)

${\sf{= \ x²-y²+y²-z²+z²-x² = 0 }}\\{\bold{ a²-b²=(a+b)(a-b)}}$

2. ${\sf{\Large{\frac{1275}{100000000}}}}$

3. Volume

4. Directly proportional or direct proportion

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