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give-x-R-and-prove-that-if-x-2x-3-than-x-3-




Question Number 116512 by bounhome last updated on 04/Oct/20
give x∈R and prove that if  x=(√(2x+3)) than x=3
givexRandprovethatifx=2x+3thanx=3
Commented by bemath last updated on 04/Oct/20
x^2 −2x−3=0 ; x ≥0  (x−3)(x+1) = 0⇒ x = 3
x22x3=0;x0(x3)(x+1)=0x=3

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