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4. What is the result when you multiply (10a + b) by (10a + 2bj? A. 100a' - 30ab - 262 C. 100+ 30ab - 2 B.100a- 30ab - 2 D. 100,7 - 30ab - 26-


pasagot po​


Sagot :

What is the result when you multiply (10a + b) by (10a + 2b)?

Answer: A. 100a^2+30ab+2b^2

Step-by-step explanation:

(10a+b)(10a+2b)

=(10a+b)(10a+2b)

=(10a)(10a)+(10a)(2b)+(b)(10a)+(b)(2b)

=100a2+20ab+10ab+2b2

=100a2+30ab+2b2

Note: Paayos po ng question, may negative po kasi sa choices pero wala naman sa given.

Reymark R. Bumatay

Bayambang National High School