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XENZIRALEIGHIN
Answered

1. (a + 10)²
2. (3x - 7)² ​

Sagot :

KIM2466IN

Answer:

  1. a²+20a+100

2. 9x²+49

Step-by-step explanation:

  1. (a+10)²
  • (a+10)(a+10)
  • a²+10a+10a+100
  • a²+20a+100

2.(3x-7)²

  • (3x-7)(3x-7)
  • 9x²-21x-21x+49
  • 9x²+49

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EMMANUELLE123095IN

Answer:

1. a 2  +20a+100

(the number 2 beside a is an exponent.)

2.  9x  2 −42x+49

(The number 2 beside '9x' is an exponent)

[If I'm wrong, sorry]

Step-by-step explanation:

I don't know

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