5y²+5-10 (factorise)
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Answered by
1
5y^2+5-10 = 5y^2-5
=5(y^2-1)
=5(y^2-1^2)
=5(y+1)(y-1)
The correct answer is 5(y+1)(y-1).
Answered by
0
Answer:
The answer will be 5(y-1)(y+1).
Step-by-step explanation:
We have given that,
= 5y^2 + 5 - 10;
From here, = 5y^2 - 5;
= 5(y^2 - 1);
Now, we had studied an identity in previous classes that;
= (x-y)(x+y);
= x^2 - y^2;
Hence, from above identity, we can write our equation as;
= 5(y^2-1);
= 5{(y)^2 - (1)^2}; {from above identity}
= 5(y-1)(y+1);
That's all.
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