solve the following equation by Factorizatio method : y^2-4x-21=0
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Answer:
2 − 4 − 2 1 = 0
solve the following equation by Factorizatio method : y^2-4x-21=0
Answered by
0
Answer:
-3 or 7
Step-by-step explanation:
We have,
x²-4x-21=0
=>x²-7x+3x-21=0
=>x(x-7)+3(x-7)=0
=>(x+3)(x-7)=0
Therefore, Either x=-3 or x=7
Note:- Your given expression is y²-4x-21=0
But it should be either x²-4x-21 or y²-4y-21.
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