3x + 2y= -1
-2x + y= 4
(2+3)whole cube
1549.73^2+((1549.73*(16+x^2))/(x^2-16))^2+1549.73*+((1549.73*(16+x^2))/(x^2-16))^2-2500^2=0
7 xy 567
-8 opon 7 multiply -14 opon 5
Prove c = 2^ℵ₀, where c is the cardinality of i and ℵ₀ is the cardinality of a countable set.
5 ÷7
0.5 trill divided by 3.2 bill
Define convergence of infinite series. Check it is convergent or not. 1/1.2 + 1/2.3+ 1/3.4 + ⋯
factorize x^{ 2 } +13x+42
