Question

441 -p square =( 21) )square - ( 17 ) square

Answer 1

441-p^2=(21)^2-(17)^2 then,
as ee know 441=(21)^2
so (21)^2-p^2=(21)^2-(17)^2
=>(21)^2-(21)^2=p^2-(17)^2
=>p^2-(17)^2=0
=>p^2=17^2
=>p=17

Answer 2

QUESTION ⤵️

• 441 - p² = (21)²-(17)²

ANSWER ⤵️

• 441 - p² = (21)²-(17)²
• 441 - p² = 441 - 289
• -p² = -289 + 441 - 441 {441 cut}
• -p² = -289
• -p = √-289
• p = 17

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