pls answer this I'll mark him/her as brainliest
simplify by using suitable identity
(20x+ 3) (20x-5)
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pls answer this I'll mark him/her as brainliest
simplify by using suitable identity
(20x+ 3) (20x-5)
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Step-by-step explanation:
(20x+ 3) (20x-5)
By using identity (x+a) (x+b)= x²+(a+b)x+ab
(20x+3) (20x-5)= (20x)²+(3-5)20x+3×(-5)
= 400x²+(-2)20x-15
= 400x²-40x-15. ( Factor of 5 )
= 80x²-8x-3
Answer:
Let us assume it as,
Where, x = 20x
a = 3
b = 5
We know that,
∴
=
=
Hope it helps you^_^