Question

anyone is here pls answer​

Answer 1

Answer:

$13). 2 {x}^{2} + 2x + {x}^{2} + x \\ = 2 {x}^{2} + {x}^{2} + 2x + x \\ = 3 {x}^{2} + 3x \\ = 3x(x + 1)$

$14).5x + {x}^{2} - 2x + {x}^{2} \\ = {x}^{2} + {x}^{2} + 5x - 2x \\ = 2 {x}^{2} + 3x$

$15).3x + 2x - x + 2 {x}^{2} \\ = 2 {x}^{2} + 3x + 2x - x \\ = 2 {x}^{2} + 4x \\ = 2x(x + 2)$

$6x + 3 {x}^{2} - x - {x}^{2} \\ = 3 {x}^{2} - {x}^{2} + 6x - x \\ = 2 {x}^{2} + 5x$

$17).4x + 3 + {x}^{2} - x \\ {x}^{2} + 4x - x + 3 \\ = {x}^{2} - 3x + 3$

$18).2x + 3x + 9 + x \\ = 2x + 3x + x + 9 \\ = 7x + 9$

$19).2 {x}^{2} + 3 + 3x - 1 \\ 2 {x}^{2} + 3x + 3 - 1 \\ = 2 {x}^{2} + 3x + 2$

$20).2x + 5 + {x}^{2} - x \\ = {x}^{2} + 2x - x + 5 \\ = {x}^{2} + x + 5$

$21).2x + 4y - x + y \\ = 2x - x + 4y + y \\ = x + 5y$

$22).2y + x + 3x - y \\ = x + 3x + 2y - y \\ = 4x + y$

$23).x + y + 2y - 4 \\ = x + 3y - 4$

$24).5 + 2x + y + 2x - 1 \\ = 2x + 2x + y + 5 - 1 \\ = 4x + y - 4$

$25).3y + 2 + 2y + 5 \\ = 3y + 2y + 2 + 5 \\ = 5y + 7$

$26).2x + 2y + {x}^{2} - x + {x}^{2} \\ = {x}^{2} + {x}^{2} + 2x - x + 2y \\ = 2 {x}^{2} + x + 2y$

please mark as brainliest

please help me

Answer 2

Answer:

L.H.S. = x2 – y2

= (p sec θ + q tan θ)2 – (p tan θ + q sec θ)2

= p2 sec θ + q2 tan2 θ + 2 pq sec 2 tan 2 -(p2 tan2 θ + q2 sec2 θ + 2pq sec θ tan θ)

= p2 sec θ + 2 tan2 θ + 2pq sec θ tan θ – p2 tan2 θ – q2 sec θ – 2pq sec θ tan θ

= p2(sec2 θ – tan2 θ) – q2(sec?2 θ – tan2 θ) =

= p2 – q2 …[sec2 θ – tan2 θ = 1

= R.H.S.hii

i want a girl bestie

we can talk on

in$ta-mehul_1800

$n@pch@t-unknown_2020q