Simplification Test 5

Question : 9 of 40

Marks: +1, -0

(16)^2 + (21)^2 - (13)^2 + x = (25)^2

Solution:

(16)^2 + (21)^2 - (13)^2 + x = (25)^2

256 +441- 169+x= 625

697- 169+x= 625

528 +x= 625

x = 625 - 528

x= 97

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