Question

Find the value of 34²-26².
Write 4x²-20x+25 in factorised form.
Find the number that has the same ratio to 48 as 32 has to 24 .
Q4. Rational no -11/9 lies between integers ____ and ____ .
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Answer 1

Answer:

34^2-26^2

=(34+26)*(34-26)

=(60)*(8)

=480

4x^2-20x+25=0

4x^2-10x-10x+25=0

2x(2x-5)-5(2x-5)=0

(2x-5)(2x-5)=0

(2x-5)^2=0

2x-5=0

x=5/2,x=5/2

-11/9 lies between -1 and -3