Using the identity , (x+a)(x+b)=x^2+(a+b)x + ab, evaluate the following product :
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Answered by
1
in this case,
x is 4x
a is 5
b is -1
therefore,
as (x+a)(x+b)=x²+(a+b)x+ab
(4x+5)(4x-1)=(4x)²+(5-1)4x+(5)(-1)
= 16x² + 16x - 5
x is 4x
a is 5
b is -1
therefore,
as (x+a)(x+b)=x²+(a+b)x+ab
(4x+5)(4x-1)=(4x)²+(5-1)4x+(5)(-1)
= 16x² + 16x - 5
Lolll:
but how to do that
click the 3 dots on top right of my answer
then click mark as brainliest
you will get points for that
their no 3 dot s
can you tell me how this -5 came..
16x^2+16x-5
the last term was 5 * -1
which is -5
ok ..thanks
Answered by
1
I guess I'm right this time at least...
am not able to factorise it so I guess its wrong
yes your answer is right. thanks
hehe
sure
haha
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