Question

subtract 4x2-8from 6xsquare-5x+3 is

=6xsquare-5x+3-(4x2-8)
=6xsquare-5x+3-4xsquare+8
=(6xsquare-4xsquare)-5x+(3+8)
=2xsquare-5x+11

is it useful​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

6x

2

−5x−3

≤4, then the least and the highest values of 4x

2

⇒6x

2

−5x−3≤4x

2

−8x+24

⇒2x

2

+3x−27≤0

Factorizing:

⇒(x+4.5)(x−3)≤0

⇒−4.5≤x≤3

Least value of 4x

2

=4×3

2

=36

Highest value of 4x

2

=4×4.5

2

=81