Question

Solve: (2+1) 2+(2−1) 2 (2+1) 2−(2−1) 2 = 17 8​

Answer 1

Answer:

(2x+1)2+(2x−1)2=817

⇒(2x+1+2x−1)(2x+1−2x+1)4x2+4x+1+4x2−4x+1=817

⇒(4x)(2)8x2+2=817

⇒8x8x2+2=817

⇒x8x2+2=17

⇒8x2−17x+2=0

⇒8x2−16x−x+2=0

⇒8x(x−2)−1(x−2)=0

⇒(x−2)(8x−1)=0

Step-by-step explanation:

I hope it's help you

Answer 2

Answer:

16

Step-by-step explanation:

$(2+1) 2+(2−1) 2 (2+1) 2−(2−1) 2$

$(4 + 2) + (4 - 2)(4 + 2) - (4 - 2)$

$6 + (2 \times 6) - (2)$

$6 + 12 - 2$

$18 - 2$

$16$