Amrinderkhattra Amrinderkhattra

13-03-2019
Mathematics

contestada

plz. solve this sum

plz solve this sum class=

Respuesta :

14-03-2019

Answer:

[tex]\large\boxed{a-b=11}[/tex]

Step-by-step explanation:

[tex]\text{Use}\ x^2-y^2=(x-y)(x+y).\\\\\text{We have}\\\\a^2-b^2=275\ \text{and}\ a+b=25.\\\\\text{Substitute:}\\\\275=(a-b)(25)\qquad\text{divide both sides by 25}\\\\\dfrac{(a-b)(25)}{25}=\dfrac{275}{25}\\\\\boxed{a-b=11}[/tex]

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