using the identity. a square -b square = (a+b) (a-b) find the value. 1, 25a square- 49b square.2, z square- 16. 3, (6x+ 7y) (6y-7y). 4,

Question

using the identity. a square -b square = (a+b) (a-b) find the value. 1, 25a square- 49b square.2, z square- 16. 3, (6x+ 7y) (6y-7y). 4,(4-x) ( 4+x).5,(b+7)(b-7). please give answers​

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3 weeks 2021-09-11T06:16:49+00:00 1 Answer 0 views 0

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    2021-09-11T06:18:10+00:00

    Answer:

    Step-by-step explanation:

    1.

    25a^{2} - 49b^{2}\\(5a)^{2} - (7b)^{2}\\(5a+7b)(5a-7b)

    2.

    z^{2} - 16\\z^{2} - 4^{2}\\(z+4)(z-4)

    3.

    (6x+7y)(6x-7y)

    (6x)^{2} - (7y)^{2} \\36x^{2} - 49y^{2}

    4.

    (4-x)(4+x)

    (4)^{2} - x^{2} \\16 - x^{2}

    5.

    (b+7)(b-7)

    b^{2} - 7^{2} \\b^{2} - 49

    Hope it helps

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