4 years ago

Rewrite the expressions without the parentheses 5(-5x-7)=

1 answer:

7 0

Answer:

5*-5x*-7=

Step-by-step explanation:

*=multiply

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VikaD [51]

Answer:

(a) 3900

(b) 4800

Step-by-step explanation:

We have given

(a) $64^2-14^2$

We know the algebraic equation $a^2-b^2=(a+b)(a-b)$

So $64^2-14^2=(64+14)(64-14)=3900$

(b) We know the algebraic equation $a^2-b^2=(a+b)(a-b)$

$112^-88^2=(112+88)(112-88)=4800$

$785^2-215^2=(785+215)(785-215)=570000$

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3 years ago

Nata [24]

Yes 144 is a perfect square because 12*12=144

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ivann1987 [24]

8 square units
A triangle

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3 years ago

Bogdan [553]

I hope this helps you

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80+24+40v-2v

104+38v

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arsen [322]

5z2-z-4
10z-z-4
9z-4

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