Rakhi Yadav

Masking of GL in SAP FICO is the technique of restricting or controlling the display of sensitive General Ledger account information to authorized users. It ensures data security by hiding critical financial details, allowing users to access only relevant information while maintaining compliance, confidentiality, and protection of financial records.

(i) $\dfrac{1}{\sqrt{7}}$:
Multiply numerator and denominator by $\sqrt{7}$:

$$\dfrac{1}{\sqrt{7}} \cdot \dfrac{\sqrt{7}}{\sqrt{7}} = \dfrac{\sqrt{7}}{7}.$$

(ii) $\dfrac{1}{\sqrt{7}-\sqrt{6}}$:
Multiply numerator and denominator by $\sqrt{7}+\sqrt{6}$:

$$\dfrac{1}{\sqrt{7}-\sqrt{6}} \cdot \dfrac{\sqrt{7}+\sqrt{6}}{\sqrt{7}+\sqrt{6}} = \dfrac{\sqrt{7}+\sqrt{6}}{(\sqrt{7})^2-(\sqrt{6})^2}.$$ $$=\frac{\sqrt{7}+\sqrt{6}}{7-6}=\sqrt{7}+\sqrt{6}\mathrm{.}$$

(iii) $\dfrac{1}{\sqrt{5}+\sqrt{2}}$:
Multiply numerator and denominator by $\sqrt{5}-\sqrt{2}$:

$$\dfrac{1}{\sqrt{5}+\sqrt{2}} \cdot \dfrac{\sqrt{5}-\sqrt{2}}{\sqrt{5}-\sqrt{2}} = \dfrac{\sqrt{5}-\sqrt{2}}{(\sqrt{5})^2-(\sqrt{2})^2}.$$ $$= \dfrac{\sqrt{5}-\sqrt{2}}{5-2} = \dfrac{\sqrt{5}-\sqrt{2}}{3}.$$(iv) $\dfrac{1}{\sqrt{7}-2}$:
Multiply numerator and denominator by $\sqrt{7}+2$:

$$\dfrac{1}{\sqrt{7}-2} \cdot \dfrac{\sqrt{7}+2}{\sqrt{7}+2} = \dfrac{\sqrt{7}+2}{(\sqrt{7})^2-(2)^2}.$$ $$= \dfrac{\sqrt{7}+2}{7-4} = \dfrac{\sqrt{7}+2}{3}.$$

Using $(A+B+C)^2=A^2+B^2+C^2+2AB+2AC+2BC$:

(i) $(x+2y+4z)^2=x^2+4y^2+16z^2+4xy+8xz+16yz$

(ii) $(2x-y+z)^2=4x^2+y^2+z^2-4xy+4xz-2yz$

(iii) $(-2x+3y+2z)^2=4x^2+9y^2+4z^2-12xy-8xz+12yz$

(iv) $(3a-7b-c)^2=9a^2+49b^2+c^2-42ab-6ac+14bc$

(v) $(-2x+5y-3z)^2=4x^2+25y^2+9z^2-20xy+12xz-30yz$

(vi) $\left(\tfrac14 a-\tfrac12 b+1\right)^2=\tfrac1{16}a^2+\tfrac14 b^2+1-\tfrac14 ab+\tfrac12 a-b$

A Functional Specification in SAP FICO is a detailed document prepared by functional consultants that explains business requirements, processes, and expected outcomes. It acts as a bridge between business users and technical consultants, guiding developers to create or customize reports, interfaces, enhancements, or configurations according to business needs.

(i) $103\times107=(100+3)(100+7)=100^2+100(3+7)+3\cdot7=10000+1000+21=11021.$

(ii) $95\times96=(100-5)(100-4)=100^2-100(5+4)+5\cdot4=10000-900+20=9120.$

(iii) $104\times96=(100+4)(100-4)=100^2-4^2=10000-16=9984.$