Answer:
2a^2
Step-by-step explanation:
- 2*(1+3)=8 => 2*4=8, 3*(4+5)=27=> 3*9=27. 4*(9+7)=64=> 4*16=64. 5*(16+9)=125 => 5*25= 125.
Remember, the exact value cannot involve any rounding or estimates. Now, let's solve this problem. First, we have to translate it into an expression:
√72 - √8 + √128 separate the terms into square roots
√36·2 - √4·2 + √64·2 square root the terms that you can
6√2 - 2√2 + 8√2 they have like radical terms, so combine the terms
6 - 2 + 8 = 12 the coefficients are 12 when combined
12√2 this is the EXACT VALUE of the expression
Hope this helps!