Question

c) 25a2+30ab+9b2=

factorizari va rog din sufletul meu plapand
acolo este la puterea a2 ^2

Answer 1

Răspuns:

a+b=a²+2ab+b²

25a²+30ab+9b²=

(5a)²+30ab+(3b)²=

(5a)²+2·5a·3b+(3b)²=

(5a + 3b)(5a + 3b)=

(5a+3b)²

Answer 2

Răspuns: $\color{Blue}\Large \boxed{\bf \bigg(5a + 3b\bigg)^{2} }$

Explicație pas cu pas:

$\color{orangered}\Large\boxed{\bf Formula: a^{2} \pm 2ab+b^{2} = \big(a\pm b\big)^{2}}$

$\it~~$

$\large \bf 25a^{2} +30ab+9b^{2} =$

$\large \bf \big(5a\big)^{2} +2\cdot5a\cdot3b+\big(3b\big)^{2}=$

$\color{red}\Large \boxed{\bf \big(5a + 3b\big)^{2} }$

==pav38==