3 years ago

What is 5(a-5b)(a+b)

Mathematics

1 answer:

Vaselesa [24]3 years ago

5 0

Answer:

10a-20b

Step-by-step explanation:

5a-25b+5a+5b

10a-20b

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Maths Questions box 51.The function f: R→ R is twice differentiable and for any x ER we have g(x) = f(4-x²), if f'(1) = -5 and f

mrs_skeptik [129]

By the chain rule,

$g(x) = f(4 - x^2) \\\\ \implies g'(x) = -2x f'(4 - x^2) \\\\ \implies g''(x) = -2 f'(4 - x^2) + 4x^2 f''(4 - x^2)$

Observe that

$4 - x^2 = 1 \implies x^2 = 3 \implies x = \pm\sqrt3$

Then

$g''(\sqrt3) = -2 f'(1) + 4\left(\sqrt3\right)^2 f''(1) = -2(-5) + 4(3)(-1) = \boxed{-2}$

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1 year ago

Clarie takes private tennis lessons every 6 days and piano lessons every 4 days.In 60 days,how often will she have tennis and pi

kozerog [31]

multiples of 4: 4,8,12,16,20,24,28,32,36,40,44,48,52,56,60

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3 years ago

A rectangular lot has an area of 240m. What is the width of the lot if it requires 64m of fencing materials to enclosed it ?.

nirvana33 [79]

Answer:

Confusing but I got the width is either 12 or 20

12 × 20 = 240 = area check

64 = perimeter = 12 + 12 + 20 + 20 = check

it does not give specifics on what is length so it's one of the 2 which ever one is the width the other is length

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2 years ago

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-5*(-3)*(-8)
15*(-8)
-120

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3 years ago

Read 2 more answers

6th grade math help me pleaseeee

saveliy_v [14]

Answer:

21x − 12

Step-by-step explanation:

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3 years ago

What is 5(a-5b)(a+b)​

What is 5(a-5b)(a+b)