Question

simplify 3x(4x-5)+3 and find the value of x=1/2​

Answer 1

Answer:

3/4/5=53760=37288==856

Answer 2

Answer:

Brainly.in

What is your question?

SheikhNuman

29.07.2018

Math

Secondary School

+5 pts

Answered

Simplify: 3x(4x-5)+3 and find its value for a) x=3 b) x=1/2

2

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BloomingBud

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(a) x = 3

⇒ 3x(4x - 5) + 3

⇒ 3 × 3(4 × 3 - 5) + 3 [put the value of x = 3]

⇒ 9(12-5 )+ 3

⇒ 9 × 7 + 3

⇒ 63 + 3

⇒ 66

Now,

(b) x =

⇒ 3x(4x - 5) + 3

⇒ 3 × (4 × - 5) + 3 [pu the value of x = ]

⇒ (2 - 5) + 3

⇒ (-3) + 3

⇒ + 3

⇒

⇒