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Yogita Ingle 4 years, 4 months ago
(a + b)3 = a3 + 3a2b + 3ab2 + b3 ; (a + b)3 = a3 + b3 + 3ab(a + b)
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Rajan Kumar Pasi 4 years, 5 months ago
Ek Kamre Ki lambai 5 metre 4 metre aur unchai 3 metre kramank 74 50 Prati metre per kidhar se is Kamre Ki diwaron per chhat par Safed karane ka Vyakhya kijiye
Sol: Pi ka maan 3.14 ya 22/7 hota hai.
Length = l = 5 m
Breadth = b = 4 m
Height = h = 3 m
Kamray ka prishthiya kshetrafal =
{tex}\huge {=> \ 2\times(l\times b + b\times h+l\times h)}\\
\huge {=> \ 2\times(5\times 4 + 4\times 3+5\times 3)}\\
\huge {=> \ 2\times(20 + 12+15)}\\
\huge {=> \ 2\times47}\\
\huge {=> \ 94 \ m^2}\\{/tex}
Chhat ka kshetrafal =
{tex}\huge {=> \ l\times b}\\
\huge {=> \ 5\times 4}\\
\huge {=> \ 20 \ m^2}\\{/tex}
Safed rang karne ka kul kshetrafal = 94 + 20 = 114 m2.
Safed rang karwane ka kul mulya ya kharcha = 114 x 74.50 Rs. = {tex}\Large {\boxed{8493 Rs.}}{/tex}
Ajeet Bainsla Gurjar 4 years, 8 months ago
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Rajan Kumar Pasi 4 years, 5 months ago
Sol: Let the cost of a notebook = x Rs.
Let the cost of a pen = y Rs.
Thus, according to the question:
Cost of notebook = twice the cost of pen
x = 2 x y
Ans => {tex}\huge \boxed {x = 2y }{/tex}
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Atish Yadav 6 months, 3 weeks ago
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Rajan Kumar Pasi 4 years, 5 months ago
Sol: Let the no. of extra units = x
Thus,
{tex}\text {Let the original bill = y Rs.}\\ \text {Therefore, Original amount+ 20% fine = 28363.20}\\ \text {=> y + 20% of y = 28363.20}\\ \text {=> y + }{\frac{20}{100}}\times \text{ y = 28363.20}\\ \text {=> }{\frac{120}{100}}\times \text{ y = 28363.20}\\ \text {=> }{\frac{6}{5}}\times \text{ y = 28363.20}\\ \text {=> }\text{ y = }{28363.20\times {\frac{6}{5}}}\\ \text {=> y = }\boxed{23636 Rs.}\\ Now, {=> \ 1910 + 71\times x = 23636}\\ {=> \ 71\times x = 23636-1910}\\ {=> \ 71\times x = 21726}\\ {=> \ x = \frac{21726}{71}}\\ {=> \ x = \boxed{306}}\\{/tex}
So, the Former reading of the meter was = 4777 - 306 = {tex}\huge {\boxed{4471} \ units.} \\ All \ the\ best\ :-)...{/tex}
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Gaurav Seth 4 years, 3 months ago
The word polynomial is derived from the greek words ‘poly’ means ‘many’ and ‘nominal’ means ‘terms’, so altogether it said “many terms”.
Polynomials are the algebraic expressions which consist of variables and coefficients. Variables are also called indeterminates. We can perform the arithmetic operations such as addition, subtraction, multiplication and also positive integer exponents for polynomial expressions but not division by variable. An example of a polynomial with one variable is x2+x-12. In this example, there are three terms: x2, x and -12.
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